18473870951 has 12 divisors (see below), whose sum is σ = 19098083016. Its totient is φ = 17869458960.

The previous prime is 18473870927. The next prime is 18473870971. The reversal of 18473870951 is 15907837481.

It is a de Polignac number, because none of the positive numbers 2^k-18473870951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18473870893 and 18473870902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18473870911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3175121 + ... + 3180933.

It is an arithmetic number, because the mean of its divisors is an integer number (1591506918).

Almost surely, 2^18473870951 is an apocalyptic number.

18473870951 is a deficient number, since it is larger than the sum of its proper divisors (624212065).

18473870951 is an equidigital number, since it uses as much as digits as its factorization.

18473870951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9182 (or 9151 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 18473870951 in words is "eighteen billion, four hundred seventy-three million, eight hundred seventy thousand, nine hundred fifty-one".