1128553694 has 4 divisors (see below), whose sum is σ = 1692830544. Its totient is φ = 564276846.

The previous prime is 1128553693. The next prime is 1128553747. The reversal of 1128553694 is 4963558211.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128553691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282138422 + ... + 282138425.

It is an arithmetic number, because the mean of its divisors is an integer number (423207636).

Almost surely, 2^1128553694 is an apocalyptic number.

1128553694 is a deficient number, since it is larger than the sum of its proper divisors (564276850).

1128553694 is an equidigital number, since it uses as much as digits as its factorization.

1128553694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564276849.

The product of its digits is 259200, while the sum is 44.

The square root of 1128553694 is about 33593.9532356643. The cubic root of 1128553694 is about 1041.1358688107.

The spelling of 1128553694 in words is "one billion, one hundred twenty-eight million, five hundred fifty-three thousand, six hundred ninety-four".