18044654410 has 36 divisors (see below), whose sum is σ = 32869564182. Its totient is φ = 7132394016.

The previous prime is 18044654401. The next prime is 18044654491. The reversal of 18044654410 is 1445644081.

It can be written as a sum of positive squares in 3 ways, for example, as 16569095841 + 1475558569 = 128721^2 + 38413^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18044654410.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45452332 + ... + 45452728.

Almost surely, 2^18044654410 is an apocalyptic number.

18044654410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18044654410 is a deficient number, since it is larger than the sum of its proper divisors (14824909772).

18044654410 is an frugal number, since it uses more digits than its factorization.

18044654410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 18044654410 in words is "eighteen billion, forty-four million, six hundred fifty-four thousand, four hundred ten".