18085440937 has 8 divisors (see below), whose sum is σ = 19381813056. Its totient is φ = 16831572912.

The previous prime is 18085440929. The next prime is 18085440943. The reversal of 18085440937 is 73904458081.

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

It is not a de Polignac number, because 18085440937 - 2³ = 18085440929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18085440977) 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, 10625143 + ... + 10626844.

It is an arithmetic number, because the mean of its divisors is an integer number (2422726632).

Almost surely, 2^18085440937 is an apocalyptic number.

It is an amenable number.

18085440937 is a deficient number, since it is larger than the sum of its proper divisors (1296372119).

18085440937 is a wasteful number, since it uses less digits than its factorization.

18085440937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21252047.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 18085440937 in words is "eighteen billion, eighty-five million, four hundred forty thousand, nine hundred thirty-seven".