18801402 has 16 divisors (see below), whose sum is σ = 38619552. Its totient is φ = 6097680.

The previous prime is 18801401. The next prime is 18801403. The reversal of 18801402 is 20410881.

It is an interprime number because it is at equal distance from previous prime (18801401) and next prime (18801403).

It is not an unprimeable number, because it can be changed into a prime (18801401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42124 + ... + 42567.

It is an arithmetic number, because the mean of its divisors is an integer number (2413722).

Almost surely, 2^18801402 is an apocalyptic number.

18801402 is an abundant number, since it is smaller than the sum of its proper divisors (19818150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18801402 is a wasteful number, since it uses less digits than its factorization.

18801402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84733.

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

The square root of 18801402 is about 4336.0583483159. The cubic root of 18801402 is about 265.9071886807.

The spelling of 18801402 in words is "eighteen million, eight hundred one thousand, four hundred two".