19056020957 has 8 divisors (see below), whose sum is σ = 19080794112. Its totient is φ = 19031266800.

The previous prime is 19056020947. The next prime is 19056020981. The reversal of 19056020957 is 75902065091.

It is a happy number.

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 19056020957 - 2¹⁴ = 19056004573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19056020947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3287732 + ... + 3293522.

It is an arithmetic number, because the mean of its divisors is an integer number (2385099264).

Almost surely, 2^19056020957 is an apocalyptic number.

It is an amenable number.

19056020957 is a deficient number, since it is larger than the sum of its proper divisors (24773155).

19056020957 is a wasteful number, since it uses less digits than its factorization.

19056020957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9499.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 19056020957 in words is "nineteen billion, fifty-six million, twenty thousand, nine hundred fifty-seven".