18925925963 has 6 divisors (see below), whose sum is σ = 22015873116. Its totient is φ = 16222222212.

The previous prime is 18925925951. The next prime is 18925926001. The reversal of 18925925963 is 36952952981.

It is not a de Polignac number, because 18925925963 - 2¹⁸ = 18925663819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18925925923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193121645 + ... + 193121742.

It is an arithmetic number, because the mean of its divisors is an integer number (3669312186).

Almost surely, 2^18925925963 is an apocalyptic number.

18925925963 is a deficient number, since it is larger than the sum of its proper divisors (3089947153).

18925925963 is an equidigital number, since it uses as much as digits as its factorization.

18925925963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386243401 (or 386243394 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 59.

The spelling of 18925925963 in words is "eighteen billion, nine hundred twenty-five million, nine hundred twenty-five thousand, nine hundred sixty-three".