3937007881 has 2 divisors, whose sum is σ = 3937007882. Its totient is φ = 3937007880.

The previous prime is 3937007863. The next prime is 3937007887. The reversal of 3937007881 is 1887007393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3351367881 + 585640000 = 57891^2 + 24200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3937007881 is a prime.

It is a super-2 number, since 2×3937007881² = 31000062110112220322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3937007887) 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, 1968503940 + 1968503941.

It is an arithmetic number, because the mean of its divisors is an integer number (1968503941).

Almost surely, 2^3937007881 is an apocalyptic number.

It is an amenable number.

3937007881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3937007881 is an equidigital number, since it uses as much as digits as its factorization.

3937007881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 3937007881 is about 62745.5805694712. The cubic root of 3937007881 is about 1579.0241104178.

The spelling of 3937007881 in words is "three billion, nine hundred thirty-seven million, seven thousand, eight hundred eighty-one".