18036036396 has 72 divisors (see below), whose sum is σ = 54033907200. Its totient is φ = 5153151312.

The previous prime is 18036036383. The next prime is 18036036409. The reversal of 18036036396 is 69363063081.

18036036396 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 6 + 0 + 3 + 639 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (18036036383) and next prime (18036036409).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1318596 + ... + 1332203.

Almost surely, 2^18036036396 is an apocalyptic number.

It is an amenable number.

18036036396 is an abundant number, since it is smaller than the sum of its proper divisors (35997870804).

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

18036036396 is a wasteful number, since it uses less digits than its factorization.

18036036396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650825 (or 2650811 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 18036036396 in words is "eighteen billion, thirty-six million, thirty-six thousand, three hundred ninety-six".