1128173490 has 48 divisors (see below), whose sum is σ = 2934921600. Its totient is φ = 300674976.

The previous prime is 1128173489. The next prime is 1128173503. The reversal of 1128173490 is 943718211.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 278701 + ... + 282719.

It is an arithmetic number, because the mean of its divisors is an integer number (61144200).

Almost surely, 2^1128173490 is an apocalyptic number.

1128173490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128173490 is an abundant number, since it is smaller than the sum of its proper divisors (1806748110).

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

1128173490 is a wasteful number, since it uses less digits than its factorization.

1128173490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151 (or 7148 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1128173490 is about 33588.2939429796. The cubic root of 1128173490 is about 1041.0189378855.

The spelling of 1128173490 in words is "one billion, one hundred twenty-eight million, one hundred seventy-three thousand, four hundred ninety".