3891304213 has 2 divisors, whose sum is σ = 3891304214. Its totient is φ = 3891304212.

The previous prime is 3891304169. The next prime is 3891304271. The reversal of 3891304213 is 3124031983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2115356049 + 1775948164 = 45993^2 + 42142^2 .

It is a cyclic number.

It is not a de Polignac number, because 3891304213 - 2¹⁷ = 3891173141 is a prime.

It is a super-2 number, since 2×3891304213² = 30284496956223098738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3891302213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945652106 + 1945652107.

It is an arithmetic number, because the mean of its divisors is an integer number (1945652107).

Almost surely, 2^3891304213 is an apocalyptic number.

It is an amenable number.

3891304213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3891304213 is an equidigital number, since it uses as much as digits as its factorization.

3891304213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 3891304213 is about 62380.3191158878. The cubic root of 3891304213 is about 1572.8901572998.

The spelling of 3891304213 in words is "three billion, eight hundred ninety-one million, three hundred four thousand, two hundred thirteen".