1123702890 has 64 divisors (see below), whose sum is σ = 2865227904. Its totient is φ = 281069568.

The previous prime is 1123702889. The next prime is 1123702901. The reversal of 1123702890 is 982073211.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152982 + ... + 160158.

It is an arithmetic number, because the mean of its divisors is an integer number (44769186).

Almost surely, 2^1123702890 is an apocalyptic number.

1123702890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123702890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432613952).

1123702890 is an abundant number, since it is smaller than the sum of its proper divisors (1741525014).

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

1123702890 is a wasteful number, since it uses less digits than its factorization.

1123702890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1123702890 is about 33521.6779114650. The cubic root of 1123702890 is about 1039.6420396520.

The spelling of 1123702890 in words is "one billion, one hundred twenty-three million, seven hundred two thousand, eight hundred ninety".