2640164434 has 8 divisors (see below), whose sum is σ = 4132431360. Its totient is φ = 1262687316.

The previous prime is 2640164389. The next prime is 2640164459. The reversal of 2640164434 is 4344610462.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2640164434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28697394 + ... + 28697485.

It is an arithmetic number, because the mean of its divisors is an integer number (516553920).

Almost surely, 2^2640164434 is an apocalyptic number.

2640164434 is a deficient number, since it is larger than the sum of its proper divisors (1492266926).

2640164434 is a wasteful number, since it uses less digits than its factorization.

2640164434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57394904.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 2640164434 is about 51382.5304359371. The cubic root of 2640164434 is about 1382.1133400664.

Adding to 2640164434 its reverse (4344610462), we get a palindrome (6984774896).

The spelling of 2640164434 in words is "two billion, six hundred forty million, one hundred sixty-four thousand, four hundred thirty-four".