1128977258 has 4 divisors (see below), whose sum is σ = 1693465890. Its totient is φ = 564488628.

The previous prime is 1128977249. The next prime is 1128977261. The reversal of 1128977258 is 8527798211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8527798211 = 227 ⋅37567393.

It can be written as a sum of positive squares in only one way, i.e., 1118434249 + 10543009 = 33443^2 + 3247^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282244313 + ... + 282244316.

Almost surely, 2^1128977258 is an apocalyptic number.

1128977258 is a deficient number, since it is larger than the sum of its proper divisors (564488632).

1128977258 is an equidigital number, since it uses as much as digits as its factorization.

1128977258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564488631.

The product of its digits is 564480, while the sum is 50.

The square root of 1128977258 is about 33600.2568144947. The cubic root of 1128977258 is about 1041.2661040894.

The spelling of 1128977258 in words is "one billion, one hundred twenty-eight million, nine hundred seventy-seven thousand, two hundred fifty-eight".