1297779058 has 12 divisors (see below), whose sum is σ = 2016112410. Its totient is φ = 626513216.

The previous prime is 1297779047. The next prime is 1297779073. The reversal of 1297779058 is 8509777921.

It can be written as a sum of positive squares in 3 ways, for example, as 1130775129 + 167003929 = 33627^2 + 12923^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 384103 + ... + 387466.

Almost surely, 2^1297779058 is an apocalyptic number.

1297779058 is a deficient number, since it is larger than the sum of its proper divisors (718333352).

1297779058 is an equidigital number, since it uses as much as digits as its factorization.

1297779058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771629 (or 771600 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 55.

The square root of 1297779058 is about 36024.7006649604. The cubic root of 1297779058 is about 1090.7710107638.

The spelling of 1297779058 in words is "one billion, two hundred ninety-seven million, seven hundred seventy-nine thousand, fifty-eight".