7870943513 has 2 divisors, whose sum is σ = 7870943514. Its totient is φ = 7870943512.

The previous prime is 7870943473. The next prime is 7870943533. The reversal of 7870943513 is 3153490787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6926733529 + 944209984 = 83227^2 + 30728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7870943513 is a prime.

It is not a weakly prime, because it can be changed into another prime (7870943533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3935471756 + 3935471757.

It is an arithmetic number, because the mean of its divisors is an integer number (3935471757).

Almost surely, 2^7870943513 is an apocalyptic number.

It is an amenable number.

7870943513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7870943513 is an equidigital number, since it uses as much as digits as its factorization.

7870943513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 7870943513 is about 88718.3380874552. The cubic root of 7870943513 is about 1989.1869369410.

The spelling of 7870943513 in words is "seven billion, eight hundred seventy million, nine hundred forty-three thousand, five hundred thirteen".