1123526380 has 24 divisors (see below), whose sum is σ = 2399397840. Its totient is φ = 441792960.

The previous prime is 1123526377. The next prime is 1123526491. The reversal of 1123526380 is 836253211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474891 + ... + 477250.

It is an arithmetic number, because the mean of its divisors is an integer number (99974910).

Almost surely, 2^1123526380 is an apocalyptic number.

1123526380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123526380 is an abundant number, since it is smaller than the sum of its proper divisors (1275871460).

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

1123526380 is a wasteful number, since it uses less digits than its factorization.

1123526380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952209 (or 952207 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1123526380 is about 33519.0450341295. The cubic root of 1123526380 is about 1039.5876015298.

Adding to 1123526380 its reverse (836253211), we get a palindrome (1959779591).

The spelling of 1123526380 in words is "one billion, one hundred twenty-three million, five hundred twenty-six thousand, three hundred eighty".