3840663121 has 4 divisors (see below), whose sum is σ = 3929980912. Its totient is φ = 3751345332.

The previous prime is 3840663091. The next prime is 3840663133. The reversal of 3840663121 is 1213660483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3840663121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3840663721) 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 3 ways as a sum of consecutive naturals, for example, 44658831 + ... + 44658916.

It is an arithmetic number, because the mean of its divisors is an integer number (982495228).

Almost surely, 2^3840663121 is an apocalyptic number.

It is an amenable number.

3840663121 is a deficient number, since it is larger than the sum of its proper divisors (89317791).

3840663121 is an equidigital number, since it uses as much as digits as its factorization.

3840663121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89317790.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 3840663121 is about 61973.0838429072. The cubic root of 3840663121 is about 1566.0371912427.

The spelling of 3840663121 in words is "three billion, eight hundred forty million, six hundred sixty-three thousand, one hundred twenty-one".