18674631240 has 64 divisors (see below), whose sum is σ = 59319423360. Its totient is φ = 4686965760.

The previous prime is 18674631233. The next prime is 18674631259. The reversal of 18674631240 is 4213647681.

It is a junction number, because it is equal to n+sod(n) for n = 18674631192 and 18674631201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4575076 + ... + 4579155.

It is an arithmetic number, because the mean of its divisors is an integer number (926865990).

Almost surely, 2^18674631240 is an apocalyptic number.

18674631240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18674631240 is an abundant number, since it is smaller than the sum of its proper divisors (40644792120).

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

18674631240 is a wasteful number, since it uses less digits than its factorization.

18674631240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9154262 (or 9154258 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 18674631240 in words is "eighteen billion, six hundred seventy-four million, six hundred thirty-one thousand, two hundred forty".