18223914 has 8 divisors (see below), whose sum is σ = 36447840. Its totient is φ = 6074636.

The previous prime is 18223913. The next prime is 18223927. The reversal of 18223914 is 41932281.

It is a sphenic number, since it is the product of 3 distinct primes.

18223914 is an admirable number.

It is a super-2 number, since 2×18223914² = 664222082958792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18223913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518654 + ... + 1518665.

It is an arithmetic number, because the mean of its divisors is an integer number (4555980).

Almost surely, 2^18223914 is an apocalyptic number.

18223914 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18223914 is a wasteful number, since it uses less digits than its factorization.

18223914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037324.

The product of its digits is 3456, while the sum is 30.

The square root of 18223914 is about 4268.9476454977. The cubic root of 18223914 is about 263.1563692024.

The spelling of 18223914 in words is "eighteen million, two hundred twenty-three thousand, nine hundred fourteen".