18160537 has 2 divisors, whose sum is σ = 18160538. Its totient is φ = 18160536.

The previous prime is 18160531. The next prime is 18160553. The reversal of 18160537 is 73506181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9511056 + 8649481 = 3084^2 + 2941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18160537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18160499 and 18160508.

It is not a weakly prime, because it can be changed into another prime (18160531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9080268 + 9080269.

It is an arithmetic number, because the mean of its divisors is an integer number (9080269).

Almost surely, 2^18160537 is an apocalyptic number.

It is an amenable number.

18160537 is a deficient number, since it is larger than the sum of its proper divisors (1).

18160537 is an equidigital number, since it uses as much as digits as its factorization.

18160537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 18160537 is about 4261.5181567136. The cubic root of 18160537 is about 262.8509567222.

The spelling of 18160537 in words is "eighteen million, one hundred sixty thousand, five hundred thirty-seven".