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19319902977 = 317378821627
BaseRepresentation
bin10001111111100011…
…100101001100000001
31211212102210202112010
4101333203211030001
5304031343343402
612513032323133
71252523315514
oct217743451401
954772722463
1019319902977
118214644071
1238b22434a9
131a8b81676b
14d13c4cd7b
157811caa6c
hex47f8e5301

19319902977 has 8 divisors (see below), whose sum is σ = 27275157216. Its totient is φ = 12122292032.

The previous prime is 19319902969. The next prime is 19319903033. The reversal of 19319902977 is 77920991391.

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

It is a cyclic number.

It is not a de Polignac number, because 19319902977 - 23 = 19319902969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19319902957) 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, 189410763 + ... + 189410864.

It is an arithmetic number, because the mean of its divisors is an integer number (3409394652).

Almost surely, 219319902977 is an apocalyptic number.

19319902977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19319902977 is a deficient number, since it is larger than the sum of its proper divisors (7955254239).

19319902977 is a wasteful number, since it uses less digits than its factorization.

19319902977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378821647.

The product of its (nonzero) digits is 1928934, while the sum is 57.

The spelling of 19319902977 in words is "nineteen billion, three hundred nineteen million, nine hundred two thousand, nine hundred seventy-seven".

Divisors: 1 3 17 51 378821627 1136464881 6439967659 19319902977