2872236649 has 4 divisors (see below), whose sum is σ = 3041191764. Its totient is φ = 2703281536.

The previous prime is 2872236623. The next prime is 2872236671. The reversal of 2872236649 is 9466322782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2307841600 + 564395049 = 48040^2 + 23757^2 .

It is a cyclic number.

It is not a de Polignac number, because 2872236649 - 2⁵ = 2872236617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2872236749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84477532 + ... + 84477565.

It is an arithmetic number, because the mean of its divisors is an integer number (760297941).

Almost surely, 2^2872236649 is an apocalyptic number.

It is an amenable number.

2872236649 is a deficient number, since it is larger than the sum of its proper divisors (168955115).

2872236649 is a wasteful number, since it uses less digits than its factorization.

2872236649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168955114.

The product of its digits is 1741824, while the sum is 49.

The square root of 2872236649 is about 53593.2518979769. The cubic root of 2872236649 is about 1421.4777727192.

The spelling of 2872236649 in words is "two billion, eight hundred seventy-two million, two hundred thirty-six thousand, six hundred forty-nine".