2640536326 has 4 divisors (see below), whose sum is σ = 3960804492. Its totient is φ = 1320268162.

The previous prime is 2640536309. The next prime is 2640536387. The reversal of 2640536326 is 6236350462.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660134080 + ... + 660134083.

It is an arithmetic number, because the mean of its divisors is an integer number (990201123).

Almost surely, 2^2640536326 is an apocalyptic number.

2640536326 is a deficient number, since it is larger than the sum of its proper divisors (1320268166).

2640536326 is a wasteful number, since it uses less digits than its factorization.

2640536326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320268165.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 2640536326 is about 51386.1491649258. The cubic root of 2640536326 is about 1382.1782315754.

Adding to 2640536326 its reverse (6236350462), we get a palindrome (8876886788).

The spelling of 2640536326 in words is "two billion, six hundred forty million, five hundred thirty-six thousand, three hundred twenty-six".