1258748089 has 2 divisors, whose sum is σ = 1258748090. Its totient is φ = 1258748088.

The previous prime is 1258748063. The next prime is 1258748111. The reversal of 1258748089 is 9808478521.

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., 1160083600 + 98664489 = 34060^2 + 9933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1258748089 - 2⁹ = 1258747577 is a prime.

It is a super-2 number, since 2×1258748089² = 3168893503122303842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1258748189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629374044 + 629374045.

It is an arithmetic number, because the mean of its divisors is an integer number (629374045).

Almost surely, 2^1258748089 is an apocalyptic number.

It is an amenable number.

1258748089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258748089 is an equidigital number, since it uses as much as digits as its factorization.

1258748089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The square root of 1258748089 is about 35478.8400176781. The cubic root of 1258748089 is about 1079.7244636029.

The spelling of 1258748089 in words is "one billion, two hundred fifty-eight million, seven hundred forty-eight thousand, eighty-nine".