3721016789 has 4 divisors (see below), whose sum is σ = 4252590624. Its totient is φ = 3189442956.

The previous prime is 3721016773. The next prime is 3721016807. The reversal of 3721016789 is 9876101273.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3721016789 - 2⁴ = 3721016773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721010789) 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, 265786907 + ... + 265786920.

It is an arithmetic number, because the mean of its divisors is an integer number (1063147656).

Almost surely, 2^3721016789 is an apocalyptic number.

It is an amenable number.

3721016789 is a deficient number, since it is larger than the sum of its proper divisors (531573835).

3721016789 is an equidigital number, since it uses as much as digits as its factorization.

3721016789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531573834.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 3721016789 is about 61000.1376145989. The cubic root of 3721016789 is about 1549.6033378324.

The spelling of 3721016789 in words is "three billion, seven hundred twenty-one million, sixteen thousand, seven hundred eighty-nine".