2491940379 has 16 divisors (see below), whose sum is σ = 3420198432. Its totient is φ = 1613134848.

The previous prime is 2491940327. The next prime is 2491940387. The reversal of 2491940379 is 9730491942.

It is a happy number.

It is not a de Polignac number, because 2491940379 - 2²⁰ = 2490891803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2491940309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65364 + ... + 96209.

It is an arithmetic number, because the mean of its divisors is an integer number (213762402).

Almost surely, 2^2491940379 is an apocalyptic number.

2491940379 is a deficient number, since it is larger than the sum of its proper divisors (928258053).

2491940379 is a wasteful number, since it uses less digits than its factorization.

2491940379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161726.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 2491940379 is about 49919.3387275913. The cubic root of 2491940379 is about 1355.7487596981.

The spelling of 2491940379 in words is "two billion, four hundred ninety-one million, nine hundred forty thousand, three hundred seventy-nine".