18958430 has 16 divisors (see below), whose sum is σ = 35048160. Its totient is φ = 7378272.

The previous prime is 18958403. The next prime is 18958477. The reversal of 18958430 is 3485981.

It is a Curzon number.

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, 25250 + ... + 25989.

It is an arithmetic number, because the mean of its divisors is an integer number (2190510).

Almost surely, 2^18958430 is an apocalyptic number.

18958430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18958430 is a deficient number, since it is larger than the sum of its proper divisors (16089730).

18958430 is a wasteful number, since it uses less digits than its factorization.

18958430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51283.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 18958430 is about 4354.1279264624. The cubic root of 18958430 is about 266.6454167095.

The spelling of 18958430 in words is "eighteen million, nine hundred fifty-eight thousand, four hundred thirty".