18015608452 has 12 divisors (see below), whose sum is σ = 32898067776. Its totient is φ = 8616160520.

The previous prime is 18015608449. The next prime is 18015608467. The reversal of 18015608452 is 25480651081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97910824 + ... + 97911007.

It is an arithmetic number, because the mean of its divisors is an integer number (2741505648).

Almost surely, 2^18015608452 is an apocalyptic number.

It is an amenable number.

18015608452 is a deficient number, since it is larger than the sum of its proper divisors (14882459324).

18015608452 is a wasteful number, since it uses less digits than its factorization.

18015608452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195821858 (or 195821856 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 18015608452 in words is "eighteen billion, fifteen million, six hundred eight thousand, four hundred fifty-two".