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19062013 = 31360901
BaseRepresentation
bin100100010110…
…1110011111101
31022212110011111
41020231303331
514334441023
61520322021
7321011245
oct110556375
938773144
1019062013
11a83a633
126473311
133c454c9
142762b25
151a1800d
hex122dcfd

19062013 has 4 divisors (see below), whose sum is σ = 19123228. Its totient is φ = 19000800.

The previous prime is 19061983. The next prime is 19062023. The reversal of 19062013 is 31026091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34969 + 19027044 = 187^2 + 4362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-19062013 is a prime.

It is a super-2 number, since 2×190620132 = 726720679224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19062023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30138 + ... + 30763.

It is an arithmetic number, because the mean of its divisors is an integer number (4780807).

Almost surely, 219062013 is an apocalyptic number.

It is an amenable number.

19062013 is a deficient number, since it is larger than the sum of its proper divisors (61215).

19062013 is an equidigital number, since it uses as much as digits as its factorization.

19062013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61214.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 19062013 is about 4366.0065277093. The cubic root of 19062013 is about 267.1301576589.

The spelling of 19062013 in words is "nineteen million, sixty-two thousand, thirteen".

Divisors: 1 313 60901 19062013