7949862251 has 2 divisors, whose sum is σ = 7949862252. Its totient is φ = 7949862250.

The previous prime is 7949862241. The next prime is 7949862281. The reversal of 7949862251 is 1522689497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7949862251 - 2¹⁴ = 7949845867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7949862193 and 7949862202.

It is not a weakly prime, because it can be changed into another prime (7949862211) 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, 3974931125 + 3974931126.

It is an arithmetic number, because the mean of its divisors is an integer number (3974931126).

Almost surely, 2^7949862251 is an apocalyptic number.

7949862251 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949862251 is an equidigital number, since it uses as much as digits as its factorization.

7949862251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 7949862251 is about 89162.0000392544. Note that the first 4 decimals coincide. The cubic root of 7949862251 is about 1995.8130952809.

The spelling of 7949862251 in words is "seven billion, nine hundred forty-nine million, eight hundred sixty-two thousand, two hundred fifty-one".