18415053 has 16 divisors (see below), whose sum is σ = 27658240. Its totient is φ = 12107232.

The previous prime is 18415031. The next prime is 18415069. The reversal of 18415053 is 35051481.

It is not a de Polignac number, because 18415053 - 2⁹ = 18414541 is a prime.

It is a super-2 number, since 2×18415053² = 678228353985618, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18415003) 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, 2701 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (1728640).

Almost surely, 2^18415053 is an apocalyptic number.

It is an amenable number.

18415053 is a deficient number, since it is larger than the sum of its proper divisors (9243187).

18415053 is an equidigital number, since it uses as much as digits as its factorization.

18415053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9425 (or 9419 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 18415053 is about 4291.2763835484. The cubic root of 18415053 is about 264.0731976783.

The spelling of 18415053 in words is "eighteen million, four hundred fifteen thousand, fifty-three".