18309157286 has 32 divisors (see below), whose sum is σ = 32173535232. Its totient is φ = 7651415520.

The previous prime is 18309157277. The next prime is 18309157297. The reversal of 18309157286 is 68275190381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126980 + ... + 229656.

It is an arithmetic number, because the mean of its divisors is an integer number (1005422976).

Almost surely, 2^18309157286 is an apocalyptic number.

18309157286 is a deficient number, since it is larger than the sum of its proper divisors (13864377946).

18309157286 is a wasteful number, since it uses less digits than its factorization.

18309157286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103004.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 18309157286 in words is "eighteen billion, three hundred nine million, one hundred fifty-seven thousand, two hundred eighty-six".