18840995 has 4 divisors (see below), whose sum is σ = 22609200. Its totient is φ = 15072792.

The previous prime is 18840967. The next prime is 18841019. The reversal of 18840995 is 59904881.

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 18840995 - 2¹² = 18836899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884095 + ... + 1884104.

It is an arithmetic number, because the mean of its divisors is an integer number (5652300).

Almost surely, 2^18840995 is an apocalyptic number.

18840995 is a deficient number, since it is larger than the sum of its proper divisors (3768205).

18840995 is an equidigital number, since it uses as much as digits as its factorization.

18840995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768204.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 18840995 is about 4340.6214992786. The cubic root of 18840995 is about 266.0937116816.

The spelling of 18840995 in words is "eighteen million, eight hundred forty thousand, nine hundred ninety-five".