3728664591 has 8 divisors (see below), whose sum is σ = 4989501744. Its totient is φ = 2476801920.

The previous prime is 3728664539. The next prime is 3728664607. The reversal of 3728664591 is 1954668273.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3728664591 - 2⁷ = 3728664463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728664521) 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 7 ways as a sum of consecutive naturals, for example, 2242650 + ... + 2244311.

It is an arithmetic number, because the mean of its divisors is an integer number (623687718).

Almost surely, 2^3728664591 is an apocalyptic number.

3728664591 is a deficient number, since it is larger than the sum of its proper divisors (1260837153).

3728664591 is a wasteful number, since it uses less digits than its factorization.

3728664591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487241.

The product of its digits is 2177280, while the sum is 51.

The square root of 3728664591 is about 61062.7921978679. The cubic root of 3728664591 is about 1550.6642440559.

The spelling of 3728664591 in words is "three billion, seven hundred twenty-eight million, six hundred sixty-four thousand, five hundred ninety-one".