18992953 has 8 divisors (see below), whose sum is σ = 21734208. Its totient is φ = 16258704.

The previous prime is 18992903. The next prime is 18992993. The reversal of 18992953 is 35929981.

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

It is not a de Polignac number, because 18992953 - 2¹⁷ = 18861881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18992903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6975 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (2716776).

Almost surely, 2^18992953 is an apocalyptic number.

It is an amenable number.

18992953 is a deficient number, since it is larger than the sum of its proper divisors (2741255).

18992953 is a wasteful number, since it uses less digits than its factorization.

18992953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its digits is 174960, while the sum is 46.

The square root of 18992953 is about 4358.0905222356. The cubic root of 18992953 is about 266.8071709219.

The spelling of 18992953 in words is "eighteen million, nine hundred ninety-two thousand, nine hundred fifty-three".