3728656693479 has 8 divisors (see below), whose sum is σ = 4971576564352. Its totient is φ = 2485753975800.

The previous prime is 3728656693397. The next prime is 3728656693579. The reversal of 3728656693479 is 9743966568273.

3728656693479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-3728656693479 is a prime.

It is a super-2 number, since 2×3728656693479² (a number of 26 digits) contains 22 as substring.

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 3728656693479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728656693079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3772219 + ... + 4656924.

It is an arithmetic number, because the mean of its divisors is an integer number (621447070544).

Almost surely, 2^{3728656693479} is an apocalyptic number.

3728656693479 is a deficient number, since it is larger than the sum of its proper divisors (1242919870873).

3728656693479 is a wasteful number, since it uses less digits than its factorization.

3728656693479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8576597.

The product of its digits is 2469035520, while the sum is 75.

The spelling of 3728656693479 in words is "three trillion, seven hundred twenty-eight billion, six hundred fifty-six million, six hundred ninety-three thousand, four hundred seventy-nine".