18085137 has 16 divisors (see below), whose sum is σ = 28080000. Its totient is φ = 10138752.

The previous prime is 18085117. The next prime is 18085147. The reversal of 18085137 is 73158081.

It is not a de Polignac number, because 18085137 - 2⁶ = 18085073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18085098 and 18085107.

It is not an unprimeable number, because it can be changed into a prime (18085117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7012 + ... + 9237.

It is an arithmetic number, because the mean of its divisors is an integer number (1755000).

Almost surely, 2^18085137 is an apocalyptic number.

It is an amenable number.

18085137 is a deficient number, since it is larger than the sum of its proper divisors (9994863).

18085137 is a wasteful number, since it uses less digits than its factorization.

18085137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16312.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 18085137 is about 4252.6623425802. The cubic root of 18085137 is about 262.4866786891.

The spelling of 18085137 in words is "eighteen million, eighty-five thousand, one hundred thirty-seven".