1123516590 has 96 divisors (see below), whose sum is σ = 3143992320. Its totient is φ = 256205376.

The previous prime is 1123516573. The next prime is 1123516609. The reversal of 1123516590 is 956153211.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1056399 + ... + 1057461.

It is an arithmetic number, because the mean of its divisors is an integer number (32749920).

Almost surely, 2^1123516590 is an apocalyptic number.

1123516590 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 1123516590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571996160).

1123516590 is an abundant number, since it is smaller than the sum of its proper divisors (2020475730).

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

1123516590 is a wasteful number, since it uses less digits than its factorization.

1123516590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 1123516590 is about 33518.8989974313. The cubic root of 1123516590 is about 1039.5845819917.

The spelling of 1123516590 in words is "one billion, one hundred twenty-three million, five hundred sixteen thousand, five hundred ninety".