18122049 has 45 divisors (see below), whose sum is σ = 30464049. Its totient is φ = 10727640.

The previous prime is 18122023. The next prime is 18122053. The reversal of 18122049 is 94022181.

The square root of 18122049 is 4257.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 18122049 - 2⁷ = 18121921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18122059) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 421422 + ... + 421464.

Almost surely, 2^18122049 is an apocalyptic number.

18122049 is the 4257-th square number.

18122049 is the 2129-th centered octagonal number.

It is an amenable number.

18122049 is a deficient number, since it is larger than the sum of its proper divisors (12342000).

18122049 is an equidigital number, since it uses as much as digits as its factorization.

18122049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The cubic root of 18122049 is about 262.6651369081.

The spelling of 18122049 in words is "eighteen million, one hundred twenty-two thousand, forty-nine".