7157064749 has 2 divisors, whose sum is σ = 7157064750. Its totient is φ = 7157064748.

The previous prime is 7157064709. The next prime is 7157064751. The reversal of 7157064749 is 9474607517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4818858724 + 2338206025 = 69418^2 + 48355^2 .

It is a cyclic number.

It is not a de Polignac number, because 7157064749 - 2²⁰ = 7156016173 is a prime.

Together with 7157064751, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7157064697 and 7157064706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7157064709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578532374 + 3578532375.

It is an arithmetic number, because the mean of its divisors is an integer number (3578532375).

Almost surely, 2^7157064749 is an apocalyptic number.

It is an amenable number.

7157064749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7157064749 is an equidigital number, since it uses as much as digits as its factorization.

7157064749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The square root of 7157064749 is about 84599.4370489544. The cubic root of 7157064749 is about 1927.1328245722.

The spelling of 7157064749 in words is "seven billion, one hundred fifty-seven million, sixty-four thousand, seven hundred forty-nine".