18802401 has 16 divisors (see below), whose sum is σ = 25893504. Its totient is φ = 12127104.

The previous prime is 18802387. The next prime is 18802403. The reversal of 18802401 is 10420881.

It is not a de Polignac number, because 18802401 - 2¹⁴ = 18786017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18802403) 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, 25500 + ... + 26226.

It is an arithmetic number, because the mean of its divisors is an integer number (1618344).

Almost surely, 2^18802401 is an apocalyptic number.

It is an amenable number.

18802401 is a deficient number, since it is larger than the sum of its proper divisors (7091103).

18802401 is a wasteful number, since it uses less digits than its factorization.

18802401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 18802401 is about 4336.1735435750. The cubic root of 18802401 is about 265.9118981979.

The spelling of 18802401 in words is "eighteen million, eight hundred two thousand, four hundred one".