3968968831 has 2 divisors, whose sum is σ = 3968968832. Its totient is φ = 3968968830.

The previous prime is 3968968823. The next prime is 3968968837. The reversal of 3968968831 is 1388698693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3968968831 - 2³ = 3968968823 is a prime.

It is a super-2 number, since 2×3968968831² = 31505427162899013122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3968968831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3968968837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984484415 + 1984484416.

It is an arithmetic number, because the mean of its divisors is an integer number (1984484416).

Almost surely, 2^3968968831 is an apocalyptic number.

3968968831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3968968831 is an equidigital number, since it uses as much as digits as its factorization.

3968968831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 61.

The square root of 3968968831 is about 62999.7526264985. The cubic root of 3968968831 is about 1583.2854817770.

The spelling of 3968968831 in words is "three billion, nine hundred sixty-eight million, nine hundred sixty-eight thousand, eight hundred thirty-one".