1128185496 has 160 divisors (see below), whose sum is σ = 3405230400. Its totient is φ = 347820480.

The previous prime is 1128185483. The next prime is 1128185533. The reversal of 1128185496 is 6945818211.

It is a happy number.

1128185496 is a `hidden beast` number, since 1 + 1 + 2 + 81 + 85 + 496 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 528351 + ... + 530481.

It is an arithmetic number, because the mean of its divisors is an integer number (21282690).

Almost surely, 2^1128185496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128185496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702615200).

1128185496 is an abundant number, since it is smaller than the sum of its proper divisors (2277044904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1128185496 is a wasteful number, since it uses less digits than its factorization.

1128185496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211 (or 2198 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1128185496 is about 33588.4726654845. The cubic root of 1128185496 is about 1041.0226307067.

It can be divided in two parts, 1128 and 185496, that added together give a square (186624 = 432²).

The spelling of 1128185496 in words is "one billion, one hundred twenty-eight million, one hundred eighty-five thousand, four hundred ninety-six".