18444731350 has 12 divisors (see below), whose sum is σ = 34307200404. Its totient is φ = 7377892520.

The previous prime is 18444731341. The next prime is 18444731381. The reversal of 18444731350 is 5313744481.

It is a super-2 number, since 2×18444731350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184447264 + ... + 184447363.

It is an arithmetic number, because the mean of its divisors is an integer number (2858933367).

Almost surely, 2^18444731350 is an apocalyptic number.

18444731350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18444731350 is a deficient number, since it is larger than the sum of its proper divisors (15862469054).

18444731350 is a wasteful number, since it uses less digits than its factorization.

18444731350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368894639 (or 368894634 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 18444731350 in words is "eighteen billion, four hundred forty-four million, seven hundred thirty-one thousand, three hundred fifty".