18860842 has 32 divisors (see below), whose sum is σ = 37989504. Its totient is φ = 6782400.

The previous prime is 18860839. The next prime is 18860843. The reversal of 18860842 is 24806881.

It is not an unprimeable number, because it can be changed into a prime (18860843) 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, 2709 + ... + 6712.

It is an arithmetic number, because the mean of its divisors is an integer number (1187172).

Almost surely, 2^18860842 is an apocalyptic number.

18860842 is an abundant number, since it is smaller than the sum of its proper divisors (19128662).

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

18860842 is a wasteful number, since it uses less digits than its factorization.

18860842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 18860842 is about 4342.9070908782. The cubic root of 18860842 is about 266.1871127750.

The spelling of 18860842 in words is "eighteen million, eight hundred sixty thousand, eight hundred forty-two".