1002645137 has 4 divisors (see below), whose sum is σ = 1079771700. Its totient is φ = 925518576.

The previous prime is 1002645097. The next prime is 1002645139. The reversal of 1002645137 is 7315462001.

1002645137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7315462001 = 127 ⋅57602063.

It can be written as a sum of positive squares in 2 ways, for example, as 688327696 + 314317441 = 26236^2 + 17729^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002645137 - 2²⁸ = 734209681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002645139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38563262 + ... + 38563287.

It is an arithmetic number, because the mean of its divisors is an integer number (269942925).

Almost surely, 2^1002645137 is an apocalyptic number.

It is an amenable number.

1002645137 is a deficient number, since it is larger than the sum of its proper divisors (77126563).

1002645137 is an equidigital number, since it uses as much as digits as its factorization.

1002645137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77126562.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1002645137 is about 31664.5722693360. The cubic root of 1002645137 is about 1000.8809360571.

The spelling of 1002645137 in words is "one billion, two million, six hundred forty-five thousand, one hundred thirty-seven".