18085162931 has 8 divisors (see below), whose sum is σ = 19735532400. Its totient is φ = 16435837440.

The previous prime is 18085162889. The next prime is 18085162937. The reversal of 18085162931 is 13926158081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18085162931 - 2¹⁰ = 18085161907 is a prime.

It is a super-2 number, since 2×18085162931² (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 (18085162937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224546 + ... + 294263.

It is an arithmetic number, because the mean of its divisors is an integer number (2466941550).

Almost surely, 2^18085162931 is an apocalyptic number.

18085162931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18085162931 is a deficient number, since it is larger than the sum of its proper divisors (1650369469).

18085162931 is a wasteful number, since it uses less digits than its factorization.

18085162931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521989.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 18085162931 in words is "eighteen billion, eighty-five million, one hundred sixty-two thousand, nine hundred thirty-one".