2457781379 has 8 divisors (see below), whose sum is σ = 2465646912. Its totient is φ = 2449926720.

The previous prime is 2457781303. The next prime is 2457781421. The reversal of 2457781379 is 9731877542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2457781379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2457781379.

It is not an unprimeable number, because it can be changed into a prime (2457781279) 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, 753917 + ... + 757169.

It is an arithmetic number, because the mean of its divisors is an integer number (308205864).

Almost surely, 2^2457781379 is an apocalyptic number.

2457781379 is a deficient number, since it is larger than the sum of its proper divisors (7865533).

2457781379 is a wasteful number, since it uses less digits than its factorization.

2457781379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437.

The product of its digits is 2963520, while the sum is 53.

The square root of 2457781379 is about 49576.0161670943. The cubic root of 2457781379 is about 1349.5254626621.

The spelling of 2457781379 in words is "two billion, four hundred fifty-seven million, seven hundred eighty-one thousand, three hundred seventy-nine".