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15381355019 = 197753104417
BaseRepresentation
bin11100101001100110…
…01101101000001011
31110200221201210102112
432110303031220023
5223000111330034
611022135452535
71053110234432
oct162463155013
943627653375
1015381355019
116583412758
122b9322714b
1315b185cc04
14a5cb34119
156005437ce
hex394ccda0b

15381355019 has 8 divisors (see below), whose sum is σ = 16193143440. Its totient is φ = 14569790976.

The previous prime is 15381355009. The next prime is 15381355039. The reversal of 15381355019 is 91055318351.

15381355019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-15381355019 is a prime.

It is a super-2 number, since 2×153813550192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15381355009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95099 + ... + 199515.

It is an arithmetic number, because the mean of its divisors is an integer number (2024142930).

Almost surely, 215381355019 is an apocalyptic number.

15381355019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

15381355019 is a deficient number, since it is larger than the sum of its proper divisors (811788421).

15381355019 is a wasteful number, since it uses less digits than its factorization.

15381355019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112189.

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 15381355019 in words is "fifteen billion, three hundred eighty-one million, three hundred fifty-five thousand, nineteen".

Divisors: 1 19 7753 104417 147307 1983923 809545001 15381355019