18757075081 has 16 divisors (see below), whose sum is σ = 19198228608. Its totient is φ = 18319392000.

The previous prime is 18757075019. The next prime is 18757075087. The reversal of 18757075081 is 18057075781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18757075081 is a prime.

It is a super-2 number, since 2×18757075081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18757075087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15617281 + ... + 15618481.

It is an arithmetic number, because the mean of its divisors is an integer number (1199889288).

Almost surely, 2^18757075081 is an apocalyptic number.

It is an amenable number.

18757075081 is a deficient number, since it is larger than the sum of its proper divisors (441153527).

18757075081 is a wasteful number, since it uses less digits than its factorization.

18757075081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352.

The product of its (nonzero) digits is 548800, while the sum is 49.

The spelling of 18757075081 in words is "eighteen billion, seven hundred fifty-seven million, seventy-five thousand, eighty-one".