18755704091 has 2 divisors, whose sum is σ = 18755704092. Its totient is φ = 18755704090.

The previous prime is 18755704063. The next prime is 18755704129. The reversal of 18755704091 is 19040755781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18755704091 - 2²² = 18751509787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18755704021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9377852045 + 9377852046.

It is an arithmetic number, because the mean of its divisors is an integer number (9377852046).

Almost surely, 2^18755704091 is an apocalyptic number.

18755704091 is a deficient number, since it is larger than the sum of its proper divisors (1).

18755704091 is an equidigital number, since it uses as much as digits as its factorization.

18755704091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 18755704091 in words is "eighteen billion, seven hundred fifty-five million, seven hundred four thousand, ninety-one".