2137487689 has 2 divisors, whose sum is σ = 2137487690. Its totient is φ = 2137487688.

The previous prime is 2137487663. The next prime is 2137487701. The reversal of 2137487689 is 9867847312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2134902025 + 2585664 = 46205^2 + 1608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2137487689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2137487389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068743844 + 1068743845.

It is an arithmetic number, because the mean of its divisors is an integer number (1068743845).

Almost surely, 2^2137487689 is an apocalyptic number.

It is an amenable number.

2137487689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2137487689 is an equidigital number, since it uses as much as digits as its factorization.

2137487689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The square root of 2137487689 is about 46232.9718815479. The cubic root of 2137487689 is about 1288.1542597878.

The spelling of 2137487689 in words is "two billion, one hundred thirty-seven million, four hundred eighty-seven thousand, six hundred eighty-nine".