18413370 has 48 divisors (see below), whose sum is σ = 48339720. Its totient is φ = 4862592.

The previous prime is 18413359. The next prime is 18413371. The reversal of 18413370 is 7331481.

It can be written as a sum of positive squares in 4 ways, for example, as 16818201 + 1595169 = 4101^2 + 1263^2 .

It is not an unprimeable number, because it can be changed into a prime (18413371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8872 + ... + 10748.

Almost surely, 2^18413370 is an apocalyptic number.

18413370 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 18413370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24169860).

18413370 is an abundant number, since it is smaller than the sum of its proper divisors (29926350).

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

18413370 is a wasteful number, since it uses less digits than its factorization.

18413370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1996 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 18413370 is about 4291.0802835650. The cubic root of 18413370 is about 264.0651526524.

The spelling of 18413370 in words is "eighteen million, four hundred thirteen thousand, three hundred seventy".