18164529 has 6 divisors (see below), whose sum is σ = 26237666. Its totient is φ = 12109680.

The previous prime is 18164491. The next prime is 18164539. The reversal of 18164529 is 92546181.

18164529 is a `hidden beast` number, since 1 + 8 + 1 + 645 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18045504 + 119025 = 4248^2 + 345^2 .

It is not a de Polignac number, because 18164529 - 2¹³ = 18156337 is a prime.

It is a super-2 number, since 2×18164529² = 659900227583682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18164493 and 18164502.

It is not an unprimeable number, because it can be changed into a prime (18164539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1009132 + ... + 1009149.

Almost surely, 2^18164529 is an apocalyptic number.

It is an amenable number.

18164529 is a deficient number, since it is larger than the sum of its proper divisors (8073137).

18164529 is a wasteful number, since it uses less digits than its factorization.

18164529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018287 (or 2018284 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 18164529 is about 4261.9865086600. The cubic root of 18164529 is about 262.8702150393.

The spelling of 18164529 in words is "eighteen million, one hundred sixty-four thousand, five hundred twenty-nine".