3620391812 has 12 divisors (see below), whose sum is σ = 6339216156. Its totient is φ = 1809187200.

The previous prime is 3620391809. The next prime is 3620391877. The reversal of 3620391812 is 2181930263.

It can be written as a sum of positive squares in 2 ways, for example, as 2208436036 + 1411955776 = 46994^2 + 37576^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 244073 + ... + 258480.

It is an arithmetic number, because the mean of its divisors is an integer number (528268013).

Almost surely, 2^3620391812 is an apocalyptic number.

It is an amenable number.

3620391812 is a deficient number, since it is larger than the sum of its proper divisors (2718824344).

3620391812 is a wasteful number, since it uses less digits than its factorization.

3620391812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504358 (or 504356 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3620391812 is about 60169.6918057588. The cubic root of 3620391812 is about 1535.5072028650.

The spelling of 3620391812 in words is "three billion, six hundred twenty million, three hundred ninety-one thousand, eight hundred twelve".