1157068321 has 2 divisors, whose sum is σ = 1157068322. Its totient is φ = 1157068320.

The previous prime is 1157068309. The next prime is 1157068333. The reversal of 1157068321 is 1238607511.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1157068309) and next prime (1157068333).

It can be written as a sum of positive squares in only one way, i.e., 1091377296 + 65691025 = 33036^2 + 8105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157068321 - 2⁷ = 1157068193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1157068301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578534160 + 578534161.

It is an arithmetic number, because the mean of its divisors is an integer number (578534161).

Almost surely, 2^1157068321 is an apocalyptic number.

It is an amenable number.

1157068321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157068321 is an equidigital number, since it uses as much as digits as its factorization.

1157068321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1157068321 is about 34015.7069748668. The cubic root of 1157068321 is about 1049.8316649264.

The spelling of 1157068321 in words is "one billion, one hundred fifty-seven million, sixty-eight thousand, three hundred twenty-one".