18434616 has 32 divisors (see below), whose sum is σ = 47160960. Its totient is φ = 6001632.

The previous prime is 18434567. The next prime is 18434639. The reversal of 18434616 is 61643481.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7900 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (1473780).

Almost surely, 2^18434616 is an apocalyptic number.

It is an amenable number.

18434616 is an abundant number, since it is smaller than the sum of its proper divisors (28726344).

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

18434616 is a wasteful number, since it uses less digits than its factorization.

18434616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17915 (or 17911 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 18434616 is about 4293.5551702523. Note that the first 3 decimals coincide. The cubic root of 18434616 is about 264.1666761978.

The spelling of 18434616 in words is "eighteen million, four hundred thirty-four thousand, six hundred sixteen".