18001881755 has 32 divisors (see below), whose sum is σ = 25401454848. Its totient is φ = 12074428800.

The previous prime is 18001881731. The next prime is 18001881761. The reversal of 18001881755 is 55718810081.

It is not a de Polignac number, because 18001881755 - 2²² = 17997687451 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 838100 + ... + 859310.

It is an arithmetic number, because the mean of its divisors is an integer number (793795464).

Almost surely, 2^18001881755 is an apocalyptic number.

18001881755 is a deficient number, since it is larger than the sum of its proper divisors (7399573093).

18001881755 is a wasteful number, since it uses less digits than its factorization.

18001881755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22427.

The product of its (nonzero) digits is 89600, while the sum is 44.

The spelling of 18001881755 in words is "eighteen billion, one million, eight hundred eighty-one thousand, seven hundred fifty-five".