19291092923 has 2 divisors, whose sum is σ = 19291092924. Its totient is φ = 19291092922.

The previous prime is 19291092913. The next prime is 19291092971. The reversal of 19291092923 is 32929019291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19291092923 - 2⁶ = 19291092859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (19291092913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9645546461 + 9645546462.

It is an arithmetic number, because the mean of its divisors is an integer number (9645546462).

Almost surely, 2^19291092923 is an apocalyptic number.

19291092923 is a deficient number, since it is larger than the sum of its proper divisors (1).

19291092923 is an equidigital number, since it uses as much as digits as its factorization.

19291092923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 19291092923 in words is "nineteen billion, two hundred ninety-one million, ninety-two thousand, nine hundred twenty-three".