3981700757 has 2 divisors, whose sum is σ = 3981700758. Its totient is φ = 3981700756.

The previous prime is 3981700741. The next prime is 3981700813. The reversal of 3981700757 is 7570071893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3785448676 + 196252081 = 61526^2 + 14009^2 .

It is a cyclic number.

It is not a de Polignac number, because 3981700757 - 2⁴ = 3981700741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3981750757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990850378 + 1990850379.

It is an arithmetic number, because the mean of its divisors is an integer number (1990850379).

Almost surely, 2^3981700757 is an apocalyptic number.

It is an amenable number.

3981700757 is a deficient number, since it is larger than the sum of its proper divisors (1).

3981700757 is an equidigital number, since it uses as much as digits as its factorization.

3981700757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 47.

The square root of 3981700757 is about 63100.7191480414. The cubic root of 3981700757 is about 1584.9766646977.

The spelling of 3981700757 in words is "three billion, nine hundred eighty-one million, seven hundred thousand, seven hundred fifty-seven".