18995558260 has 48 divisors (see below), whose sum is σ = 48271071744. Its totient is φ = 6129658368.

The previous prime is 18995558203. The next prime is 18995558273. The reversal of 18995558260 is 6285559981.

It is a junction number, because it is equal to n+sod(n) for n = 18995558195 and 18995558204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3988284 + ... + 3993043.

It is an arithmetic number, because the mean of its divisors is an integer number (1005647328).

Almost surely, 2^18995558260 is an apocalyptic number.

18995558260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18995558260 is an abundant number, since it is smaller than the sum of its proper divisors (29275513484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18995558260 is a wasteful number, since it uses less digits than its factorization.

18995558260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7981360 (or 7981358 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 58.

The spelling of 18995558260 in words is "eighteen billion, nine hundred ninety-five million, five hundred fifty-eight thousand, two hundred sixty".