2116640326 has 4 divisors (see below), whose sum is σ = 3174960492. Its totient is φ = 1058320162.

The previous prime is 2116640303. The next prime is 2116640341. The reversal of 2116640326 is 6230466112.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529160080 + ... + 529160083.

It is an arithmetic number, because the mean of its divisors is an integer number (793740123).

Almost surely, 2^2116640326 is an apocalyptic number.

2116640326 is a deficient number, since it is larger than the sum of its proper divisors (1058320166).

2116640326 is a wasteful number, since it uses less digits than its factorization.

2116640326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058320165.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2116640326 is about 46006.9595387480. The cubic root of 2116640326 is about 1283.9526914406.

The spelling of 2116640326 in words is "two billion, one hundred sixteen million, six hundred forty thousand, three hundred twenty-six".