1157268097 has 2 divisors, whose sum is σ = 1157268098. Its totient is φ = 1157268096.

The previous prime is 1157268071. The next prime is 1157268109. The reversal of 1157268097 is 7908627511.

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., 1155728016 + 1540081 = 33996^2 + 1241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157268097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1157268997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578634048 + 578634049.

It is an arithmetic number, because the mean of its divisors is an integer number (578634049).

Almost surely, 2^1157268097 is an apocalyptic number.

It is an amenable number.

1157268097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157268097 is an equidigital number, since it uses as much as digits as its factorization.

1157268097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 46.

The square root of 1157268097 is about 34018.6433738913. The cubic root of 1157268097 is about 1049.8920817280.

The spelling of 1157268097 in words is "one billion, one hundred fifty-seven million, two hundred sixty-eight thousand, ninety-seven".