18649726096 has 15 divisors (see below), whose sum is σ = 36134902713. Its totient is φ = 9324589920.

The previous prime is 18649726079. The next prime is 18649726133. The reversal of 18649726096 is 69062794681.

It is a happy number.

The square root of 18649726096 is 136564.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9479748496 + 9169977600 = 97364^2 + 95760^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18649726096.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 529186 + ... + 563326.

Almost surely, 2^18649726096 is an apocalyptic number.

18649726096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18649726096 is the 136564-th square number.

It is an amenable number.

18649726096 is a deficient number, since it is larger than the sum of its proper divisors (17485176617).

18649726096 is an frugal number, since it uses more digits than its factorization.

18649726096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68290 (or 34143 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 18649726096 in words is "eighteen billion, six hundred forty-nine million, seven hundred twenty-six thousand, ninety-six".