2640134669 has 8 divisors (see below), whose sum is σ = 2652494208. Its totient is φ = 2627800560.

The previous prime is 2640134621. The next prime is 2640134701. The reversal of 2640134669 is 9664310462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640134669 - 2²⁴ = 2623357453 is a prime.

It is a super-2 number, since 2×2640134669² = 13940622140911479122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640134269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220259 + ... + 231935.

It is an arithmetic number, because the mean of its divisors is an integer number (331561776).

Almost surely, 2^2640134669 is an apocalyptic number.

It is an amenable number.

2640134669 is a deficient number, since it is larger than the sum of its proper divisors (12359539).

2640134669 is a wasteful number, since it uses less digits than its factorization.

2640134669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12715.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 2640134669 is about 51382.2407938774. The cubic root of 2640134669 is about 1382.1081461023.

The spelling of 2640134669 in words is "two billion, six hundred forty million, one hundred thirty-four thousand, six hundred sixty-nine".