2641651609 has 9 divisors (see below), whose sum is σ = 2672904213. Its totient is φ = 2610762012.

The previous prime is 2641651589. The next prime is 2641651633. The reversal of 2641651609 is 9061561462.

It is a happy number.

The square root of 2641651609 is 51397.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2641651609 - 2²³ = 2633263001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2641651669) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5293642 + ... + 5294140.

It is an arithmetic number, because the mean of its divisors is an integer number (296989357).

Almost surely, 2^2641651609 is an apocalyptic number.

2641651609 is the 51397-th square number.

2641651609 is the 25699-th centered octagonal number.

It is an amenable number.

2641651609 is a deficient number, since it is larger than the sum of its proper divisors (31252604).

2641651609 is an frugal number, since it uses more digits than its factorization.

2641651609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The cubic root of 2641651609 is about 1382.3728010006.

The spelling of 2641651609 in words is "two billion, six hundred forty-one million, six hundred fifty-one thousand, six hundred nine".