18740870 has 16 divisors (see below), whose sum is σ = 34645968. Its totient is φ = 7293600.

The previous prime is 18740867. The next prime is 18740881. The reversal of 18740870 is 7804781.

It is a self number, because there is not a number n which added to its sum of digits gives 18740870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24956 + ... + 25695.

It is an arithmetic number, because the mean of its divisors is an integer number (2165373).

Almost surely, 2^18740870 is an apocalyptic number.

18740870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18740870 is a deficient number, since it is larger than the sum of its proper divisors (15905098).

18740870 is a wasteful number, since it uses less digits than its factorization.

18740870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50695.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 18740870 is about 4329.0726489631. The cubic root of 18740870 is about 265.6215149716.

The spelling of 18740870 in words is "eighteen million, seven hundred forty thousand, eight hundred seventy".