2492978191 has 8 divisors (see below), whose sum is σ = 2782859904. Its totient is φ = 2213637720.

The previous prime is 2492978167. The next prime is 2492978197. The reversal of 2492978191 is 1918792942.

2492978191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2492978191 - 2⁹ = 2492977679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2492978197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634811 + ... + 2635756.

It is an arithmetic number, because the mean of its divisors is an integer number (347857488).

Almost surely, 2^2492978191 is an apocalyptic number.

2492978191 is a deficient number, since it is larger than the sum of its proper divisors (289881713).

2492978191 is a wasteful number, since it uses less digits than its factorization.

2492978191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270621.

The product of its digits is 653184, while the sum is 52.

The square root of 2492978191 is about 49929.7325348334. The cubic root of 2492978191 is about 1355.9369419762.

The spelling of 2492978191 in words is "two billion, four hundred ninety-two million, nine hundred seventy-eight thousand, one hundred ninety-one".