3965561692 has 12 divisors (see below), whose sum is σ = 6986309400. Its totient is φ = 1969473296.

The previous prime is 3965561681. The next prime is 3965561693. The reversal of 3965561692 is 2961655693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965561693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326218 + ... + 3327409.

It is an arithmetic number, because the mean of its divisors is an integer number (582192450).

Almost surely, 2^3965561692 is an apocalyptic number.

It is an amenable number.

3965561692 is a deficient number, since it is larger than the sum of its proper divisors (3020747708).

3965561692 is a wasteful number, since it uses less digits than its factorization.

3965561692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653780 (or 6653778 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 52.

The square root of 3965561692 is about 62972.7059288387. The cubic root of 3965561692 is about 1582.8322978983.

The spelling of 3965561692 in words is "three billion, nine hundred sixty-five million, five hundred sixty-one thousand, six hundred ninety-two".