18995379 has 32 divisors (see below), whose sum is σ = 28621824. Its totient is φ = 11128320.

The previous prime is 18995369. The next prime is 18995381. The reversal of 18995379 is 97359981.

It is a happy number.

It is not a de Polignac number, because 18995379 - 2¹² = 18991283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18995329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78699 + ... + 78939.

It is an arithmetic number, because the mean of its divisors is an integer number (894432).

Almost surely, 2^18995379 is an apocalyptic number.

18995379 is a deficient number, since it is larger than the sum of its proper divisors (9626445).

18995379 is a wasteful number, since it uses less digits than its factorization.

18995379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347.

The product of its digits is 612360, while the sum is 51.

The square root of 18995379 is about 4358.3688462543. The cubic root of 18995379 is about 266.8185303392.

The spelling of 18995379 in words is "eighteen million, nine hundred ninety-five thousand, three hundred seventy-nine".