18157092 has 12 divisors (see below), whose sum is σ = 42366576. Its totient is φ = 6052360.

The previous prime is 18157081. The next prime is 18157099. The reversal of 18157092 is 29075181.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18157099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756534 + ... + 756557.

It is an arithmetic number, because the mean of its divisors is an integer number (3530548).

Almost surely, 2^18157092 is an apocalyptic number.

18157092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18157092 is an abundant number, since it is smaller than the sum of its proper divisors (24209484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18157092 is a wasteful number, since it uses less digits than its factorization.

18157092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513098 (or 1513096 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 18157092 is about 4261.1139388662. The cubic root of 18157092 is about 262.8343349888.

The spelling of 18157092 in words is "eighteen million, one hundred fifty-seven thousand, ninety-two".