18743970 has 96 divisors (see below), whose sum is σ = 53778816. Its totient is φ = 4166400.

The previous prime is 18743969. The next prime is 18743999. The reversal of 18743970 is 7934781.

It is a super-2 number, since 2×18743970² = 702672822721800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60115 + ... + 60425.

It is an arithmetic number, because the mean of its divisors is an integer number (560196).

Almost surely, 2^18743970 is an apocalyptic number.

18743970 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 18743970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26889408).

18743970 is an abundant number, since it is smaller than the sum of its proper divisors (35034846).

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

18743970 is a wasteful number, since it uses less digits than its factorization.

18743970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 18743970 is about 4329.4306785073. The cubic root of 18743970 is about 265.6361599925.

The spelling of 18743970 in words is "eighteen million, seven hundred forty-three thousand, nine hundred seventy".