3942968819 has 2 divisors, whose sum is σ = 3942968820. Its totient is φ = 3942968818.

The previous prime is 3942968801. The next prime is 3942968849. The reversal of 3942968819 is 9188692493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3942968819 - 2⁸ = 3942968563 is a prime.

It is a super-2 number, since 2×3942968819² = 31094006215212509522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3942968849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971484409 + 1971484410.

It is an arithmetic number, because the mean of its divisors is an integer number (1971484410).

Almost surely, 2^3942968819 is an apocalyptic number.

3942968819 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942968819 is an equidigital number, since it uses as much as digits as its factorization.

3942968819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 59.

The square root of 3942968819 is about 62793.0634624558. The cubic root of 3942968819 is about 1579.8206305752.

The spelling of 3942968819 in words is "three billion, nine hundred forty-two million, nine hundred sixty-eight thousand, eight hundred nineteen".