18481531010 has 16 divisors (see below), whose sum is σ = 33270916536. Its totient is φ = 7391687808.

The previous prime is 18481530967. The next prime is 18481531039. The reversal of 18481531010 is 1013518481.

It can be written as a sum of positive squares in 4 ways, for example, as 12346098769 + 6135432241 = 111113^2 + 78329^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28499 + ... + 194358.

Almost surely, 2^18481531010 is an apocalyptic number.

18481531010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18481531010 is a deficient number, since it is larger than the sum of its proper divisors (14789385526).

18481531010 is a wasteful number, since it uses less digits than its factorization.

18481531010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231157.

The product of its (nonzero) digits is 3840, while the sum is 32.

The spelling of 18481531010 in words is "eighteen billion, four hundred eighty-one million, five hundred thirty-one thousand, ten".