3788835721 has 8 divisors (see below), whose sum is σ = 4201034688. Its totient is φ = 3387930000.

The previous prime is 3788835697. The next prime is 3788835727. The reversal of 3788835721 is 1275388873.

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 3788835721 - 2⁹ = 3788835209 is a prime.

It is a super-2 number, since 2×3788835721² = 28710552241451179682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3788835727) 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, 2822605 + ... + 2823946.

It is an arithmetic number, because the mean of its divisors is an integer number (525129336).

Almost surely, 2^3788835721 is an apocalyptic number.

It is an amenable number.

3788835721 is a deficient number, since it is larger than the sum of its proper divisors (412198967).

3788835721 is a wasteful number, since it uses less digits than its factorization.

3788835721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5646623.

The product of its digits is 2257920, while the sum is 52.

The square root of 3788835721 is about 61553.5191601585. The cubic root of 3788835721 is about 1558.9610275903.

The spelling of 3788835721 in words is "three billion, seven hundred eighty-eight million, eight hundred thirty-five thousand, seven hundred twenty-one".