18949195 has 4 divisors (see below), whose sum is σ = 22739040. Its totient is φ = 15159352.

The previous prime is 18949181. The next prime is 18949211. The reversal of 18949195 is 59194981.

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 18949195 - 2¹⁹ = 18424907 is a prime.

It is a super-2 number, since 2×18949195² = 718143982296050, which contains 22 as substring.

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, 1894915 + ... + 1894924.

It is an arithmetic number, because the mean of its divisors is an integer number (5684760).

Almost surely, 2^18949195 is an apocalyptic number.

18949195 is a deficient number, since it is larger than the sum of its proper divisors (3789845).

18949195 is an equidigital number, since it uses as much as digits as its factorization.

18949195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789844.

The product of its digits is 116640, while the sum is 46.

The square root of 18949195 is about 4353.0673093808. The cubic root of 18949195 is about 266.6021137150.

The spelling of 18949195 in words is "eighteen million, nine hundred forty-nine thousand, one hundred ninety-five".