18053091 has 32 divisors (see below), whose sum is σ = 31902720. Its totient is φ = 9865152.

The previous prime is 18053089. The next prime is 18053117. The reversal of 18053091 is 19035081.

It is not a de Polignac number, because 18053091 - 2¹ = 18053089 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 (18053291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2271 + ... + 6423.

It is an arithmetic number, because the mean of its divisors is an integer number (996960).

Almost surely, 2^18053091 is an apocalyptic number.

18053091 is a deficient number, since it is larger than the sum of its proper divisors (13849629).

18053091 is a wasteful number, since it uses less digits than its factorization.

18053091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192 (or 4186 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 18053091 is about 4248.8929146308. The cubic root of 18053091 is about 262.3315490680.

The spelling of 18053091 in words is "eighteen million, fifty-three thousand, ninety-one".