18955487883 has 32 divisors (see below), whose sum is σ = 28631024640. Its totient is φ = 11082908160.

The previous prime is 18955487869. The next prime is 18955487899. The reversal of 18955487883 is 38878455981.

It is not a de Polignac number, because 18955487883 - 2⁴ = 18955487867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18955487183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101235 + ... + 219452.

It is an arithmetic number, because the mean of its divisors is an integer number (894719520).

Almost surely, 2^18955487883 is an apocalyptic number.

18955487883 is a deficient number, since it is larger than the sum of its proper divisors (9675536757).

18955487883 is a wasteful number, since it uses less digits than its factorization.

18955487883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320787.

The product of its digits is 77414400, while the sum is 66.

The spelling of 18955487883 in words is "eighteen billion, nine hundred fifty-five million, four hundred eighty-seven thousand, eight hundred eighty-three".