1128977253 has 12 divisors (see below), whose sum is σ = 1639025388. Its totient is φ = 748829760.

The previous prime is 1128977249. The next prime is 1128977261. The reversal of 1128977253 is 3527798211.

It can be written as a sum of positive squares in 2 ways, for example, as 884586564 + 244390689 = 29742^2 + 15633^2 .

It is not a de Polignac number, because 1128977253 - 2² = 1128977249 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1128977199 and 1128977208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128977153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316608 + ... + 320153.

It is an arithmetic number, because the mean of its divisors is an integer number (136585449).

Almost surely, 2^1128977253 is an apocalyptic number.

It is an amenable number.

1128977253 is a deficient number, since it is larger than the sum of its proper divisors (510048135).

1128977253 is a wasteful number, since it uses less digits than its factorization.

1128977253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636964 (or 636961 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 1128977253 is about 33600.2567400905. The cubic root of 1128977253 is about 1041.2661025522.

The spelling of 1128977253 in words is "one billion, one hundred twenty-eight million, nine hundred seventy-seven thousand, two hundred fifty-three".