3836193721 has 8 divisors (see below), whose sum is σ = 3952491264. Its totient is φ = 3721341120.

The previous prime is 3836193709. The next prime is 3836193749. The reversal of 3836193721 is 1273916383.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3836193721 - 2⁹ = 3836193209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3836193791) 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, 355845 + ... + 366466.

It is an arithmetic number, because the mean of its divisors is an integer number (494061408).

Almost surely, 2^3836193721 is an apocalyptic number.

It is an amenable number.

3836193721 is a deficient number, since it is larger than the sum of its proper divisors (116297543).

3836193721 is a wasteful number, since it uses less digits than its factorization.

3836193721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722471.

The product of its digits is 163296, while the sum is 43.

The square root of 3836193721 is about 61937.0141434022. The cubic root of 3836193721 is about 1565.4294868630.

The spelling of 3836193721 in words is "three billion, eight hundred thirty-six million, one hundred ninety-three thousand, seven hundred twenty-one".