3872910643 has 4 divisors (see below), whose sum is σ = 4426183600. Its totient is φ = 3319637688.

The previous prime is 3872910599. The next prime is 3872910649. The reversal of 3872910643 is 3460192783.

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 3872910643 - 2²⁹ = 3336039731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3872910643.

It is not an unprimeable number, because it can be changed into a prime (3872910649) 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, 276636468 + ... + 276636481.

It is an arithmetic number, because the mean of its divisors is an integer number (1106545900).

Almost surely, 2^3872910643 is an apocalyptic number.

3872910643 is a deficient number, since it is larger than the sum of its proper divisors (553272957).

3872910643 is an equidigital number, since it uses as much as digits as its factorization.

3872910643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553272956.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 3872910643 is about 62232.7136078767. The cubic root of 3872910643 is about 1570.4079758448.

The spelling of 3872910643 in words is "three billion, eight hundred seventy-two million, nine hundred ten thousand, six hundred forty-three".