3752656643 has 4 divisors (see below), whose sum is σ = 3753480048. Its totient is φ = 3751833240.

The previous prime is 3752656627. The next prime is 3752656703. The reversal of 3752656643 is 3466562573.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3752656643 - 2⁴ = 3752656627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3752656603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404828 + ... + 413993.

It is an arithmetic number, because the mean of its divisors is an integer number (938370012).

Almost surely, 2^3752656643 is an apocalyptic number.

3752656643 is a deficient number, since it is larger than the sum of its proper divisors (823405).

3752656643 is an equidigital number, since it uses as much as digits as its factorization.

3752656643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823404.

The product of its digits is 2721600, while the sum is 47.

The square root of 3752656643 is about 61258.9311284485. The cubic root of 3752656643 is about 1553.9830467064.

The spelling of 3752656643 in words is "three billion, seven hundred fifty-two million, six hundred fifty-six thousand, six hundred forty-three".