18834513 has 8 divisors (see below), whose sum is σ = 25132800. Its totient is φ = 12546288.

The previous prime is 18834509. The next prime is 18834523. The reversal of 18834513 is 31543881.

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

It is not a de Polignac number, because 18834513 - 2² = 18834509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18834523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5568 + ... + 8286.

It is an arithmetic number, because the mean of its divisors is an integer number (3141600).

Almost surely, 2^18834513 is an apocalyptic number.

It is an amenable number.

18834513 is a deficient number, since it is larger than the sum of its proper divisors (6298287).

18834513 is a wasteful number, since it uses less digits than its factorization.

18834513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031.

The product of its digits is 11520, while the sum is 33.

The square root of 18834513 is about 4339.8747677784. The cubic root of 18834513 is about 266.0631928179.

The spelling of 18834513 in words is "eighteen million, eight hundred thirty-four thousand, five hundred thirteen".