1128561914 has 4 divisors (see below), whose sum is σ = 1692842874. Its totient is φ = 564280956.

The previous prime is 1128561887. The next prime is 1128561937. The reversal of 1128561914 is 4191658211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 863360689 + 265201225 = 29383^2 + 16285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282140477 + ... + 282140480.

Almost surely, 2^1128561914 is an apocalyptic number.

1128561914 is a deficient number, since it is larger than the sum of its proper divisors (564280960).

1128561914 is an equidigital number, since it uses as much as digits as its factorization.

1128561914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564280959.

The product of its digits is 17280, while the sum is 38.

The square root of 1128561914 is about 33594.0755788874. The cubic root of 1128561914 is about 1041.1383965640.

The spelling of 1128561914 in words is "one billion, one hundred twenty-eight million, five hundred sixty-one thousand, nine hundred fourteen".