18948379 has 8 divisors (see below), whose sum is σ = 19422720. Its totient is φ = 18477096.

The previous prime is 18948359. The next prime is 18948383. The reversal of 18948379 is 97384981.

It is a happy number.

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 18948379 - 2⁹ = 18947867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18948359) 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, 16312 + ... + 17434.

It is an arithmetic number, because the mean of its divisors is an integer number (2427840).

Almost surely, 2^18948379 is an apocalyptic number.

18948379 is a deficient number, since it is larger than the sum of its proper divisors (474341).

18948379 is a wasteful number, since it uses less digits than its factorization.

18948379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 435456, while the sum is 49.

The square root of 18948379 is about 4352.9735813579. The cubic root of 18948379 is about 266.5982868075.

The spelling of 18948379 in words is "eighteen million, nine hundred forty-eight thousand, three hundred seventy-nine".