18896393 has 16 divisors (see below), whose sum is σ = 20644800. Its totient is φ = 17236800.

The previous prime is 18896389. The next prime is 18896399. The reversal of 18896393 is 39369881.

It is not a de Polignac number, because 18896393 - 2² = 18896389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18896399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82403 + ... + 82631.

It is an arithmetic number, because the mean of its divisors is an integer number (1290300).

Almost surely, 2^18896393 is an apocalyptic number.

It is an amenable number.

18896393 is a deficient number, since it is larger than the sum of its proper divisors (1748407).

18896393 is a wasteful number, since it uses less digits than its factorization.

18896393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its digits is 279936, while the sum is 47.

The square root of 18896393 is about 4346.9981596499. The cubic root of 18896393 is about 266.3542541022.

The spelling of 18896393 in words is "eighteen million, eight hundred ninety-six thousand, three hundred ninety-three".