18542016 has 42 divisors (see below), whose sum is σ = 53148992. Its totient is φ = 6180480.

The previous prime is 18542009. The next prime is 18542023. The reversal of 18542016 is 61024581.

It is an interprime number because it is at equal distance from previous prime (18542009) and next prime (18542023).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15520 + ... + 16671.

Almost surely, 2^18542016 is an apocalyptic number.

18542016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18542016 is an abundant number, since it is smaller than the sum of its proper divisors (34606976).

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

18542016 is a wasteful number, since it uses less digits than its factorization.

18542016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32209 (or 32196 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18542016 is about 4306.0441242514. The cubic root of 18542016 is about 264.6786944800.

Adding to 18542016 its reverse (61024581), we get a palindrome (79566597).

The spelling of 18542016 in words is "eighteen million, five hundred forty-two thousand, sixteen".