18949079 has 8 divisors (see below), whose sum is σ = 19997280. Its totient is φ = 17919616.

The previous prime is 18949057. The next prime is 18949081. The reversal of 18949079 is 97094981.

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

It is not a de Polignac number, because 18949079 - 2⁸ = 18948823 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 (18949009) 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, 2582 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (2499660).

Almost surely, 2^18949079 is an apocalyptic number.

18949079 is a deficient number, since it is larger than the sum of its proper divisors (1048201).

18949079 is an equidigital number, since it uses as much as digits as its factorization.

18949079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 18949079 is about 4353.0539854222. The cubic root of 18949079 is about 266.6015697005.

The spelling of 18949079 in words is "eighteen million, nine hundred forty-nine thousand, seventy-nine".