2645790136 has 64 divisors (see below), whose sum is σ = 5512082400. Its totient is φ = 1180569600.

The previous prime is 2645790107. The next prime is 2645790137. The reversal of 2645790136 is 6310975462.

It is a junction number, because it is equal to n+sod(n) for n = 2645790092 and 2645790101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645790137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1082676 + ... + 1085116.

Almost surely, 2^2645790136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645790136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2756041200).

2645790136 is an abundant number, since it is smaller than the sum of its proper divisors (2866292264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2645790136 is a wasteful number, since it uses less digits than its factorization.

2645790136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680 (or 2676 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 2645790136 is about 51437.2446384913. The cubic root of 2645790136 is about 1383.0943195834.

The spelling of 2645790136 in words is "two billion, six hundred forty-five million, seven hundred ninety thousand, one hundred thirty-six".