2881600945 has 4 divisors (see below), whose sum is σ = 3457921140. Its totient is φ = 2305280752.

The previous prime is 2881600913. The next prime is 2881600949. The reversal of 2881600945 is 5490061882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5490061882 = 2 ⋅2745030941.

It can be written as a sum of positive squares in 2 ways, for example, as 1658769984 + 1222830961 = 40728^2 + 34969^2 .

It is a cyclic number.

It is not a de Polignac number, because 2881600945 - 2⁵ = 2881600913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2881600949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288160090 + ... + 288160099.

It is an arithmetic number, because the mean of its divisors is an integer number (864480285).

Almost surely, 2^2881600945 is an apocalyptic number.

It is an amenable number.

2881600945 is a deficient number, since it is larger than the sum of its proper divisors (576320195).

2881600945 is an equidigital number, since it uses as much as digits as its factorization.

2881600945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576320194.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 2881600945 is about 53680.5453120588. The cubic root of 2881600945 is about 1423.0209021542.

The spelling of 2881600945 in words is "two billion, eight hundred eighty-one million, six hundred thousand, nine hundred forty-five".