2491804195 has 4 divisors (see below), whose sum is σ = 2990165040. Its totient is φ = 1993443352.

The previous prime is 2491804193. The next prime is 2491804241. The reversal of 2491804195 is 5914081942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5914081942 = 2 ⋅2957040971.

It is a cyclic number.

It is not a de Polignac number, because 2491804195 - 2¹ = 2491804193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2491804193) 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, 249180415 + ... + 249180424.

It is an arithmetic number, because the mean of its divisors is an integer number (747541260).

Almost surely, 2^2491804195 is an apocalyptic number.

2491804195 is a deficient number, since it is larger than the sum of its proper divisors (498360845).

2491804195 is an equidigital number, since it uses as much as digits as its factorization.

2491804195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498360844.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 2491804195 is about 49917.9746684498. The cubic root of 2491804195 is about 1355.7240621232.

The spelling of 2491804195 in words is "two billion, four hundred ninety-one million, eight hundred four thousand, one hundred ninety-five".