2257672981 has 16 divisors (see below), whose sum is σ = 2454935040. Its totient is φ = 2068335360.

The previous prime is 2257672931. The next prime is 2257672999. The reversal of 2257672981 is 1892767522.

It is a cyclic number.

It is not a de Polignac number, because 2257672981 - 2¹⁹ = 2257148693 is a prime.

It is a super-2 number, since 2×2257672981² = 10194174578274852722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257672931) 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, 83515 + ... + 107191.

It is an arithmetic number, because the mean of its divisors is an integer number (153433440).

Almost surely, 2^2257672981 is an apocalyptic number.

It is an amenable number.

2257672981 is a deficient number, since it is larger than the sum of its proper divisors (197262059).

2257672981 is a wasteful number, since it uses less digits than its factorization.

2257672981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23844.

The product of its digits is 846720, while the sum is 49.

The square root of 2257672981 is about 47514.9763863984. The cubic root of 2257672981 is about 1311.8585551477.

The spelling of 2257672981 in words is "two billion, two hundred fifty-seven million, six hundred seventy-two thousand, nine hundred eighty-one".