18201045 has 16 divisors (see below), whose sum is σ = 29249280. Its totient is φ = 9664704.

The previous prime is 18201041. The next prime is 18201049. The reversal of 18201045 is 54010281.

It is an interprime number because it is at equal distance from previous prime (18201041) and next prime (18201049).

It is not a de Polignac number, because 18201045 - 2² = 18201041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18201041) 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, 1047 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (1828080).

Almost surely, 2^18201045 is an apocalyptic number.

18201045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18201045 is a deficient number, since it is larger than the sum of its proper divisors (11048235).

18201045 is a wasteful number, since it uses less digits than its factorization.

18201045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 18201045 is about 4266.2682756714. The cubic root of 18201045 is about 263.0462457290.

The spelling of 18201045 in words is "eighteen million, two hundred one thousand, forty-five".