1128996979 has 16 divisors (see below), whose sum is σ = 1320606720. Its totient is φ = 953746560.

The previous prime is 1128996961. The next prime is 1128996991. The reversal of 1128996979 is 9796998211.

It is a cyclic number.

It is not a de Polignac number, because 1128996979 - 2⁷ = 1128996851 is a prime.

It is a super-2 number, since 2×1128996979² = 2549268357182252882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128996679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23439 + ... + 52984.

It is an arithmetic number, because the mean of its divisors is an integer number (82537920).

Almost surely, 2^1128996979 is an apocalyptic number.

1128996979 is a deficient number, since it is larger than the sum of its proper divisors (191609741).

1128996979 is a wasteful number, since it uses less digits than its factorization.

1128996979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76530.

The product of its digits is 4408992, while the sum is 61.

The square root of 1128996979 is about 33600.5502782321. The cubic root of 1128996979 is about 1041.2721670073.

The spelling of 1128996979 in words is "one billion, one hundred twenty-eight million, nine hundred ninety-six thousand, nine hundred seventy-nine".