18895995 has 24 divisors (see below), whose sum is σ = 34178976. Its totient is φ = 9639168.

The previous prime is 18895991. The next prime is 18896047. The reversal of 18895995 is 59959881.

It is not a de Polignac number, because 18895995 - 2² = 18895991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18895991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8094 + ... + 10163.

It is an arithmetic number, because the mean of its divisors is an integer number (1424124).

Almost surely, 2^18895995 is an apocalyptic number.

18895995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18895995 is a deficient number, since it is larger than the sum of its proper divisors (15282981).

18895995 is a wasteful number, since it uses less digits than its factorization.

18895995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18291 (or 18288 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The square root of 18895995 is about 4346.9523806916. The cubic root of 18895995 is about 266.3523840850.

The spelling of 18895995 in words is "eighteen million, eight hundred ninety-five thousand, nine hundred ninety-five".