2137318065 has 48 divisors (see below), whose sum is σ = 3753608976. Its totient is φ = 1124928000.

The previous prime is 2137318063. The next prime is 2137318109. The reversal of 2137318065 is 5608137312.

It can be written as a sum of positive squares in 8 ways, for example, as 359936784 + 1777381281 = 18972^2 + 42159^2 .

It is not a de Polignac number, because 2137318065 - 2¹ = 2137318063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2137318063) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1912887 + ... + 1914003.

It is an arithmetic number, because the mean of its divisors is an integer number (78200187).

Almost surely, 2^2137318065 is an apocalyptic number.

It is an amenable number.

2137318065 is a deficient number, since it is larger than the sum of its proper divisors (1616290911).

2137318065 is a wasteful number, since it uses less digits than its factorization.

2137318065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2137318065 is about 46231.1373967805. The cubic root of 2137318065 is about 1288.1201843232.

The spelling of 2137318065 in words is "two billion, one hundred thirty-seven million, three hundred eighteen thousand, sixty-five".