1620361683 has 12 divisors (see below), whose sum is σ = 2403780288. Its totient is φ = 1051045200.

The previous prime is 1620361643. The next prime is 1620361693. The reversal of 1620361683 is 3861630261.

1620361683 is a `hidden beast` number, since 16 + 20 + 3 + 616 + 8 + 3 = 666.

It is not a de Polignac number, because 1620361683 - 2²⁶ = 1553252819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1620361643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2432643 + ... + 2433308.

It is an arithmetic number, because the mean of its divisors is an integer number (200315024).

Almost surely, 2^1620361683 is an apocalyptic number.

1620361683 is a deficient number, since it is larger than the sum of its proper divisors (783418605).

1620361683 is a wasteful number, since it uses less digits than its factorization.

1620361683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865994 (or 4865991 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1620361683 is about 40253.7163874343. The cubic root of 1620361683 is about 1174.5476896168.

The spelling of 1620361683 in words is "one billion, six hundred twenty million, three hundred sixty-one thousand, six hundred eighty-three".