3881357993 has 2 divisors, whose sum is σ = 3881357994. Its totient is φ = 3881357992.

The previous prime is 3881357989. The next prime is 3881358017. The reversal of 3881357993 is 3997531883.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3835077184 + 46280809 = 61928^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 3881357993 - 2² = 3881357989 is a prime.

It is a super-3 number, since 3×3881357993³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3881357933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940678996 + 1940678997.

It is an arithmetic number, because the mean of its divisors is an integer number (1940678997).

Almost surely, 2^3881357993 is an apocalyptic number.

It is an amenable number.

3881357993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3881357993 is an equidigital number, since it uses as much as digits as its factorization.

3881357993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The square root of 3881357993 is about 62300.5456878188. The cubic root of 3881357993 is about 1571.5489052278.

The spelling of 3881357993 in words is "three billion, eight hundred eighty-one million, three hundred fifty-seven thousand, nine hundred ninety-three".