3783870721 has 8 divisors (see below), whose sum is σ = 3796416000. Its totient is φ = 3771344640.

The previous prime is 3783870719. The next prime is 3783870731. The reversal of 3783870721 is 1270783873.

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 3783870721 - 2¹ = 3783870719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3783870731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462456 + ... + 470566.

It is an arithmetic number, because the mean of its divisors is an integer number (474552000).

Almost surely, 2^3783870721 is an apocalyptic number.

It is an amenable number.

3783870721 is a deficient number, since it is larger than the sum of its proper divisors (12545279).

3783870721 is a wasteful number, since it uses less digits than its factorization.

3783870721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 3783870721 is about 61513.1751822323. The cubic root of 3783870721 is about 1558.2797607010.

The spelling of 3783870721 in words is "three billion, seven hundred eighty-three million, eight hundred seventy thousand, seven hundred twenty-one".