7948857353 has 2 divisors, whose sum is σ = 7948857354. Its totient is φ = 7948857352.

The previous prime is 7948857317. The next prime is 7948857383. The reversal of 7948857353 is 3537588497.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7236394489 + 712462864 = 85067^2 + 26692^2 .

It is a cyclic number.

It is not a de Polignac number, because 7948857353 - 2¹² = 7948853257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7948857292 and 7948857301.

It is not a weakly prime, because it can be changed into another prime (7948857383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974428676 + 3974428677.

It is an arithmetic number, because the mean of its divisors is an integer number (3974428677).

Almost surely, 2^7948857353 is an apocalyptic number.

It is an amenable number.

7948857353 is a deficient number, since it is larger than the sum of its proper divisors (1).

7948857353 is an equidigital number, since it uses as much as digits as its factorization.

7948857353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 59.

The square root of 7948857353 is about 89156.3646241815. The cubic root of 7948857353 is about 1995.7289985156.

The spelling of 7948857353 in words is "seven billion, nine hundred forty-eight million, eight hundred fifty-seven thousand, three hundred fifty-three".