3975364643 has 18 divisors (see below), whose sum is σ = 4414725084. Its totient is φ = 3578707264.

The previous prime is 3975364607. The next prime is 3975364727. The reversal of 3975364643 is 3464635793.

It is not a de Polignac number, because 3975364643 - 2¹⁰ = 3975363619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3975364591 and 3975364600.

It is not an unprimeable number, because it can be changed into a prime (3975364543) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139880 + ... + 165882.

Almost surely, 2^3975364643 is an apocalyptic number.

3975364643 is a deficient number, since it is larger than the sum of its proper divisors (439360441).

3975364643 is a wasteful number, since it uses less digits than its factorization.

3975364643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26083 (or 26043 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 50.

The square root of 3975364643 is about 63050.4928053699. The cubic root of 3975364643 is about 1584.1354894382.

The spelling of 3975364643 in words is "three billion, nine hundred seventy-five million, three hundred sixty-four thousand, six hundred forty-three".