18802542 has 32 divisors (see below), whose sum is σ = 41192064. Its totient is φ = 5674400.

The previous prime is 18802529. The next prime is 18802543. The reversal of 18802542 is 24520881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18802543) 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, 22492 + ... + 23312.

It is an arithmetic number, because the mean of its divisors is an integer number (1287252).

Almost surely, 2^18802542 is an apocalyptic number.

18802542 is an abundant number, since it is smaller than the sum of its proper divisors (22389522).

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

18802542 is a wasteful number, since it uses less digits than its factorization.

18802542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 18802542 is about 4336.1898021189. The cubic root of 18802542 is about 265.9125628911.

The spelling of 18802542 in words is "eighteen million, eight hundred two thousand, five hundred forty-two".