18083227516 has 12 divisors (see below), whose sum is σ = 32242736232. Its totient is φ = 8871017168.

The previous prime is 18083227493. The next prime is 18083227529. The reversal of 18083227516 is 61572238081.

It is a congruent 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, 42648910 + ... + 42649333.

It is an arithmetic number, because the mean of its divisors is an integer number (2686894686).

Almost surely, 2^18083227516 is an apocalyptic number.

It is an amenable number.

18083227516 is a deficient number, since it is larger than the sum of its proper divisors (14159508716).

18083227516 is a wasteful number, since it uses less digits than its factorization.

18083227516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85298300 (or 85298298 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 18083227516 in words is "eighteen billion, eighty-three million, two hundred twenty-seven thousand, five hundred sixteen".