18299413 has 8 divisors (see below), whose sum is σ = 21013920. Its totient is φ = 15760080.

The previous prime is 18299401. The next prime is 18299417. The reversal of 18299413 is 31499281.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18299413 is a prime.

It is a super-2 number, since 2×18299413² = 669737032289138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18299417) 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, 43570 + ... + 43987.

It is an arithmetic number, because the mean of its divisors is an integer number (2626740).

Almost surely, 2^18299413 is an apocalyptic number.

It is an amenable number.

18299413 is a deficient number, since it is larger than the sum of its proper divisors (2714507).

18299413 is a wasteful number, since it uses less digits than its factorization.

18299413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87587.

The product of its digits is 15552, while the sum is 37.

The square root of 18299413 is about 4277.7813174589. The cubic root of 18299413 is about 263.5192745749.

The spelling of 18299413 in words is "eighteen million, two hundred ninety-nine thousand, four hundred thirteen".