2872689637 has 2 divisors, whose sum is σ = 2872689638. Its totient is φ = 2872689636.

The previous prime is 2872689593. The next prime is 2872689689. The reversal of 2872689637 is 7369862782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1606326241 + 1266363396 = 40079^2 + 35586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2872689637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2872689697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1436344818 + 1436344819.

It is an arithmetic number, because the mean of its divisors is an integer number (1436344819).

Almost surely, 2^2872689637 is an apocalyptic number.

It is an amenable number.

2872689637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872689637 is an equidigital number, since it uses as much as digits as its factorization.

2872689637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 58.

The square root of 2872689637 is about 53597.4778977519. The cubic root of 2872689637 is about 1421.5524971243.

The spelling of 2872689637 in words is "two billion, eight hundred seventy-two million, six hundred eighty-nine thousand, six hundred thirty-seven".