18845130 has 16 divisors (see below), whose sum is σ = 45228384. Its totient is φ = 5025360.

The previous prime is 18845111. The next prime is 18845147. The reversal of 18845130 is 3154881.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 628171 = 18845130 / (1 + 8 + 8 + 4 + 5 + 1 + 3 + 0).

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, 314056 + ... + 314115.

It is an arithmetic number, because the mean of its divisors is an integer number (2826774).

Almost surely, 2^18845130 is an apocalyptic number.

18845130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18845130 is an abundant number, since it is smaller than the sum of its proper divisors (26383254).

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

18845130 is a wasteful number, since it uses less digits than its factorization.

18845130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628181.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18845130 is about 4341.0977874266. The cubic root of 18845130 is about 266.1131766305.

The spelling of 18845130 in words is "eighteen million, eight hundred forty-five thousand, one hundred thirty".