18901245 has 16 divisors (see below), whose sum is σ = 32991552. Its totient is φ = 9164160.

The previous prime is 18901237. The next prime is 18901247. The reversal of 18901245 is 54210981.

It is a happy number.

It is not a de Polignac number, because 18901245 - 2³ = 18901237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18901247) 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, 57112 + ... + 57441.

It is an arithmetic number, because the mean of its divisors is an integer number (2061972).

Almost surely, 2^18901245 is an apocalyptic number.

18901245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18901245 is a deficient number, since it is larger than the sum of its proper divisors (14090307).

18901245 is a wasteful number, since it uses less digits than its factorization.

18901245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114572.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18901245 is about 4347.5562101024. The cubic root of 18901245 is about 266.3770492858.

The spelling of 18901245 in words is "eighteen million, nine hundred one thousand, two hundred forty-five".