18740970 has 80 divisors (see below), whose sum is σ = 53395848. Its totient is φ = 4700160.

The previous prime is 18740941. The next prime is 18740993. The reversal of 18740970 is 7904781.

18740970 is a `hidden beast` number, since 187 + 409 + 70 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14493249 + 4247721 = 3807^2 + 2061^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13090 + ... + 14450.

Almost surely, 2^18740970 is an apocalyptic number.

18740970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18740970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26697924).

18740970 is an abundant number, since it is smaller than the sum of its proper divisors (34654878).

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

18740970 is a wasteful number, since it uses less digits than its factorization.

18740970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 18740970 is about 4329.0841987654. The cubic root of 18740970 is about 265.6219874168.

The spelling of 18740970 in words is "eighteen million, seven hundred forty thousand, nine hundred seventy".