3651617768 has 32 divisors (see below), whose sum is σ = 7086146760. Its totient is φ = 1762897920.

The previous prime is 3651617759. The next prime is 3651617773. The reversal of 3651617768 is 8677161563.

It can be written as a sum of positive squares in 4 ways, for example, as 3160463524 + 491154244 = 56218^2 + 22162^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 25571 + ... + 89202.

Almost surely, 2^3651617768 is an apocalyptic number.

It is an amenable number.

3651617768 is a deficient number, since it is larger than the sum of its proper divisors (3434528992).

3651617768 is a wasteful number, since it uses less digits than its factorization.

3651617768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114917 (or 114913 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 3651617768 is about 60428.6171279800. The cubic root of 3651617768 is about 1539.9091653850.

The spelling of 3651617768 in words is "three billion, six hundred fifty-one million, six hundred seventeen thousand, seven hundred sixty-eight".