2872358581 has 8 divisors (see below), whose sum is σ = 2951313624. Its totient is φ = 2793473280.

The previous prime is 2872358569. The next prime is 2872358609. The reversal of 2872358581 is 1858532782.

It can be written as a sum of positive squares in 4 ways, for example, as 866124900 + 2006233681 = 29430^2 + 44791^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2872358581 - 2²³ = 2863969973 is a prime.

It is a super-2 number, since 2×2872358581² = 16500887635688667122, 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 (2872358561) 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, 72321 + ... + 104761.

It is an arithmetic number, because the mean of its divisors is an integer number (368914203).

Almost surely, 2^2872358581 is an apocalyptic number.

It is an amenable number.

2872358581 is a deficient number, since it is larger than the sum of its proper divisors (78955043).

2872358581 is a wasteful number, since it uses less digits than its factorization.

2872358581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34871.

The product of its digits is 1075200, while the sum is 49.

The square root of 2872358581 is about 53594.3894544942. The cubic root of 2872358581 is about 1421.4978872613.

The spelling of 2872358581 in words is "two billion, eight hundred seventy-two million, three hundred fifty-eight thousand, five hundred eighty-one".