18054886731 has 64 divisors (see below), whose sum is σ = 29262643200. Its totient is φ = 9683769600.

The previous prime is 18054886727. The next prime is 18054886739. The reversal of 18054886731 is 13768845081.

It is a happy number.

It is not a de Polignac number, because 18054886731 - 2² = 18054886727 is a prime.

It is a super-2 number, since 2×18054886731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18054886739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4775800 + ... + 4779578.

It is an arithmetic number, because the mean of its divisors is an integer number (457228800).

Almost surely, 2^18054886731 is an apocalyptic number.

18054886731 is a deficient number, since it is larger than the sum of its proper divisors (11207756469).

18054886731 is a wasteful number, since it uses less digits than its factorization.

18054886731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 18054886731 in words is "eighteen billion, fifty-four million, eight hundred eighty-six thousand, seven hundred thirty-one".