19081379568 has 40 divisors (see below), whose sum is σ = 49648211200. Its totient is φ = 6314698944.

The previous prime is 19081379549. The next prime is 19081379573. The reversal of 19081379568 is 86597318091.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423288 + ... + 1436631.

It is an arithmetic number, because the mean of its divisors is an integer number (1241205280).

Almost surely, 2^19081379568 is an apocalyptic number.

It is an amenable number.

19081379568 is an abundant number, since it is smaller than the sum of its proper divisors (30566831632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19081379568 is a wasteful number, since it uses less digits than its factorization.

19081379568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860069 (or 2860063 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 57.

The spelling of 19081379568 in words is "nineteen billion, eighty-one million, three hundred seventy-nine thousand, five hundred sixty-eight".