7860404381 has 2 divisors, whose sum is σ = 7860404382. Its totient is φ = 7860404380.

The previous prime is 7860404341. The next prime is 7860404389. The reversal of 7860404381 is 1834040687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7380356281 + 480048100 = 85909^2 + 21910^2 .

It is a cyclic number.

It is not a de Polignac number, because 7860404381 - 2⁶ = 7860404317 is a prime.

It is a super-2 number, since 2×7860404381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7860404389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930202190 + 3930202191.

It is an arithmetic number, because the mean of its divisors is an integer number (3930202191).

Almost surely, 2^7860404381 is an apocalyptic number.

It is an amenable number.

7860404381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7860404381 is an equidigital number, since it uses as much as digits as its factorization.

7860404381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 7860404381 is about 88658.9216097286. The cubic root of 7860404381 is about 1988.2987051110.

The spelling of 7860404381 in words is "seven billion, eight hundred sixty million, four hundred four thousand, three hundred eighty-one".