1158925897 has 2 divisors, whose sum is σ = 1158925898. Its totient is φ = 1158925896.

The previous prime is 1158925847. The next prime is 1158925913. The reversal of 1158925897 is 7985298511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1056835081 + 102090816 = 32509^2 + 10104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158925897 - 2⁷ = 1158925769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1158925837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579462948 + 579462949.

It is an arithmetic number, because the mean of its divisors is an integer number (579462949).

Almost surely, 2^1158925897 is an apocalyptic number.

It is an amenable number.

1158925897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158925897 is an equidigital number, since it uses as much as digits as its factorization.

1158925897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 55.

The square root of 1158925897 is about 34043.0007049907. Note that the first 3 decimals coincide. The cubic root of 1158925897 is about 1050.3931700691.

The spelling of 1158925897 in words is "one billion, one hundred fifty-eight million, nine hundred twenty-five thousand, eight hundred ninety-seven".