18992413 has 8 divisors (see below), whose sum is σ = 20795616. Its totient is φ = 17202000.

The previous prime is 18992401. The next prime is 18992431. The reversal of 18992413 is 31429981.

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

It is a cyclic number.

It is not a de Polignac number, because 18992413 - 2¹⁷ = 18861341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18992473) 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, 63 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (2599452).

Almost surely, 2^18992413 is an apocalyptic number.

It is an amenable number.

18992413 is a deficient number, since it is larger than the sum of its proper divisors (1803203).

18992413 is a wasteful number, since it uses less digits than its factorization.

18992413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395.

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

The square root of 18992413 is about 4358.0285680569. The cubic root of 18992413 is about 266.8046423132.

The spelling of 18992413 in words is "eighteen million, nine hundred ninety-two thousand, four hundred thirteen".