1258280979 has 8 divisors (see below), whose sum is σ = 1731827712. Its totient is φ = 811794120.

The previous prime is 1258280963. The next prime is 1258280983. The reversal of 1258280979 is 9790828521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1258280979 - 2⁴ = 1258280963 is a prime.

It is a super-2 number, since 2×1258280979² = 3166542044226396882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1258280929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6764859 + ... + 6765044.

It is an arithmetic number, because the mean of its divisors is an integer number (216478464).

Almost surely, 2^1258280979 is an apocalyptic number.

1258280979 is a deficient number, since it is larger than the sum of its proper divisors (473546733).

1258280979 is a wasteful number, since it uses less digits than its factorization.

1258280979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13529937.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 1258280979 is about 35472.2564689646. The cubic root of 1258280979 is about 1079.5908884266.

The spelling of 1258280979 in words is "one billion, two hundred fifty-eight million, two hundred eighty thousand, nine hundred seventy-nine".