18963795 has 32 divisors (see below), whose sum is σ = 31868928. Its totient is φ = 9618048.

The previous prime is 18963793. The next prime is 18963809. The reversal of 18963795 is 59736981.

It is not a de Polignac number, because 18963795 - 2¹ = 18963793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18963793) 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, 25722 + ... + 26448.

It is an arithmetic number, because the mean of its divisors is an integer number (995904).

Almost surely, 2^18963795 is an apocalyptic number.

18963795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18963795 is a deficient number, since it is larger than the sum of its proper divisors (12905133).

18963795 is a wasteful number, since it uses less digits than its factorization.

18963795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its digits is 408240, while the sum is 48.

The square root of 18963795 is about 4354.7439649192. The cubic root of 18963795 is about 266.6705667832.

The spelling of 18963795 in words is "eighteen million, nine hundred sixty-three thousand, seven hundred ninety-five".