1258260979 has 2 divisors, whose sum is σ = 1258260980. Its totient is φ = 1258260978.

The previous prime is 1258260919. The next prime is 1258261003. The reversal of 1258260979 is 9790628521.

It is a strong prime.

It is an emirp because it is prime and its reverse (9790628521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1258260979 - 2⁷ = 1258260851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1258260919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629130489 + 629130490.

It is an arithmetic number, because the mean of its divisors is an integer number (629130490).

Almost surely, 2^1258260979 is an apocalyptic number.

1258260979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258260979 is an equidigital number, since it uses as much as digits as its factorization.

1258260979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1258260979 is about 35471.9745573883. The cubic root of 1258260979 is about 1079.5851684715.

The spelling of 1258260979 in words is "one billion, two hundred fifty-eight million, two hundred sixty thousand, nine hundred seventy-nine".