18231045 has 16 divisors (see below), whose sum is σ = 33336960. Its totient is φ = 8334144.

The previous prime is 18231029. The next prime is 18231049. The reversal of 18231045 is 54013281.

It is not a de Polignac number, because 18231045 - 2⁴ = 18231029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18231049) 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 15 ways as a sum of consecutive naturals, for example, 86710 + ... + 86919.

It is an arithmetic number, because the mean of its divisors is an integer number (2083560).

Almost surely, 2^18231045 is an apocalyptic number.

18231045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18231045 is a deficient number, since it is larger than the sum of its proper divisors (15105915).

18231045 is a wasteful number, since it uses less digits than its factorization.

18231045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173644.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18231045 is about 4269.7827813602. The cubic root of 18231045 is about 263.1906890043.

The spelling of 18231045 in words is "eighteen million, two hundred thirty-one thousand, forty-five".