18027134956 has 12 divisors (see below), whose sum is σ = 31549151592. Its totient is φ = 9013091648.

The previous prime is 18027134953. The next prime is 18027134959. The reversal of 18027134956 is 65943172081.

It is an interprime number because it is at equal distance from previous prime (18027134953) and next prime (18027134959).

It is not an unprimeable number, because it can be changed into a prime (18027134953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25570 + ... + 191593.

It is an arithmetic number, because the mean of its divisors is an integer number (2629095966).

It is a 1-persistent number, because it is pandigital, but 2⋅18027134956 = 36054269912 is not.

Almost surely, 2^18027134956 is an apocalyptic number.

It is an amenable number.

18027134956 is a deficient number, since it is larger than the sum of its proper divisors (13522016636).

18027134956 is a wasteful number, since it uses less digits than its factorization.

18027134956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237920 (or 237918 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 18027134956 in words is "eighteen billion, twenty-seven million, one hundred thirty-four thousand, nine hundred fifty-six".