2881457381 has 16 divisors (see below), whose sum is σ = 3361290048. Its totient is φ = 2440992000.

The previous prime is 2881457353. The next prime is 2881457389. The reversal of 2881457381 is 1837541882.

It is a cyclic number.

It is not a de Polignac number, because 2881457381 - 2⁶ = 2881457317 is a prime.

It is a super-2 number, since 2×2881457381² = 16605593277038758322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881457389) 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, 57395 + ... + 95168.

It is an arithmetic number, because the mean of its divisors is an integer number (210080628).

Almost surely, 2^2881457381 is an apocalyptic number.

It is an amenable number.

2881457381 is a deficient number, since it is larger than the sum of its proper divisors (479832667).

2881457381 is a wasteful number, since it uses less digits than its factorization.

2881457381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152692.

The product of its digits is 430080, while the sum is 47.

The square root of 2881457381 is about 53679.2080884210. The cubic root of 2881457381 is about 1422.9972696933.

The spelling of 2881457381 in words is "two billion, eight hundred eighty-one million, four hundred fifty-seven thousand, three hundred eighty-one".