3968117291 has 2 divisors, whose sum is σ = 3968117292. Its totient is φ = 3968117290.

The previous prime is 3968117233. The next prime is 3968117303. The reversal of 3968117291 is 1927118693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3968117291 is a prime.

It is not a weakly prime, because it can be changed into another prime (3968111291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984058645 + 1984058646.

It is an arithmetic number, because the mean of its divisors is an integer number (1984058646).

Almost surely, 2^3968117291 is an apocalyptic number.

3968117291 is a deficient number, since it is larger than the sum of its proper divisors (1).

3968117291 is an equidigital number, since it uses as much as digits as its factorization.

3968117291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 3968117291 is about 62992.9939834582. The cubic root of 3968117291 is about 1583.1722426790.

The spelling of 3968117291 in words is "three billion, nine hundred sixty-eight million, one hundred seventeen thousand, two hundred ninety-one".