18814955 has 4 divisors (see below), whose sum is σ = 22577952. Its totient is φ = 15051960.

The previous prime is 18814909. The next prime is 18814967. The reversal of 18814955 is 55941881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55941881 = 577 ⋅96953.

It is not a de Polignac number, because 18814955 - 2⁶ = 18814891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1881491 + ... + 1881500.

It is an arithmetic number, because the mean of its divisors is an integer number (5644488).

Almost surely, 2^18814955 is an apocalyptic number.

18814955 is a deficient number, since it is larger than the sum of its proper divisors (3762997).

18814955 is an equidigital number, since it uses as much as digits as its factorization.

18814955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762996.

The product of its digits is 57600, while the sum is 41.

The square root of 18814955 is about 4337.6208916871. The cubic root of 18814955 is about 265.9710664442.

The spelling of 18814955 in words is "eighteen million, eight hundred fourteen thousand, nine hundred fifty-five".