18958414 has 4 divisors (see below), whose sum is σ = 28437624. Its totient is φ = 9479206.

The previous prime is 18958403. The next prime is 18958477. The reversal of 18958414 is 41485981.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18958414² = 718842922790792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4739602 + ... + 4739605.

It is an arithmetic number, because the mean of its divisors is an integer number (7109406).

Almost surely, 2^18958414 is an apocalyptic number.

18958414 is a deficient number, since it is larger than the sum of its proper divisors (9479210).

18958414 is an equidigital number, since it uses as much as digits as its factorization.

18958414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479209.

The product of its digits is 46080, while the sum is 40.

The square root of 18958414 is about 4354.1260891251. The cubic root of 18958414 is about 266.6453416975.

The spelling of 18958414 in words is "eighteen million, nine hundred fifty-eight thousand, four hundred fourteen".