18983995 has 4 divisors (see below), whose sum is σ = 22780800. Its totient is φ = 15187192.

The previous prime is 18983989. The next prime is 18983999. The reversal of 18983995 is 59938981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18983995 - 2⁵ = 18983963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18983999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898395 + ... + 1898404.

It is an arithmetic number, because the mean of its divisors is an integer number (5695200).

Almost surely, 2^18983995 is an apocalyptic number.

18983995 is a deficient number, since it is larger than the sum of its proper divisors (3796805).

18983995 is an equidigital number, since it uses as much as digits as its factorization.

18983995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796804.

The product of its digits is 699840, while the sum is 52.

The square root of 18983995 is about 4357.0626573415. The cubic root of 18983995 is about 266.7652179145.

The spelling of 18983995 in words is "eighteen million, nine hundred eighty-three thousand, nine hundred ninety-five".