19207292057 has 4 divisors (see below), whose sum is σ = 19532839440. Its totient is φ = 18881744676.

The previous prime is 19207292051. The next prime is 19207292059. The reversal of 19207292057 is 75029270291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19207292057 - 2¹² = 19207287961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19207291999 and 19207292017.

It is not an unprimeable number, because it can be changed into a prime (19207292051) 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, 162773603 + ... + 162773720.

It is an arithmetic number, because the mean of its divisors is an integer number (4883209860).

Almost surely, 2^19207292057 is an apocalyptic number.

It is an amenable number.

19207292057 is a deficient number, since it is larger than the sum of its proper divisors (325547383).

19207292057 is an equidigital number, since it uses as much as digits as its factorization.

19207292057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325547382.

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 19207292057 in words is "nineteen billion, two hundred seven million, two hundred ninety-two thousand, fifty-seven".