1128153906 has 120 divisors (see below), whose sum is σ = 2823355920. Its totient is φ = 336370320.

The previous prime is 1128153889. The next prime is 1128153913. The reversal of 1128153906 is 6093518211.

1128153906 is a `hidden beast` number, since 112 + 8 + 1 + 539 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1312905 + ... + 1313763.

It is an arithmetic number, because the mean of its divisors is an integer number (23527966).

Almost surely, 2^1128153906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128153906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411677960).

1128153906 is an abundant number, since it is smaller than the sum of its proper divisors (1695202014).

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

1128153906 is a wasteful number, since it uses less digits than its factorization.

1128153906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1128153906 is about 33588.0024115755. The cubic root of 1128153906 is about 1041.0129141568.

The spelling of 1128153906 in words is "one billion, one hundred twenty-eight million, one hundred fifty-three thousand, nine hundred six".