18885046 has 4 divisors (see below), whose sum is σ = 28327572. Its totient is φ = 9442522.

The previous prime is 18885043. The next prime is 18885049. The reversal of 18885046 is 64058881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64058881 = 151 ⋅424231.

It is an interprime number because it is at equal distance from previous prime (18885043) and next prime (18885049).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4721260 + ... + 4721263.

It is an arithmetic number, because the mean of its divisors is an integer number (7081893).

Almost surely, 2^18885046 is an apocalyptic number.

18885046 is a deficient number, since it is larger than the sum of its proper divisors (9442526).

18885046 is an equidigital number, since it uses as much as digits as its factorization.

18885046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9442525.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 18885046 is about 4345.6928101282. The cubic root of 18885046 is about 266.3009295184.

The spelling of 18885046 in words is "eighteen million, eight hundred eighty-five thousand, forty-six".