1123139088 has 40 divisors (see below), whose sum is σ = 3223826400. Its totient is φ = 374379552.

The previous prime is 1123139081. The next prime is 1123139123. The reversal of 1123139088 is 8809313211.

It is a super-2 number, since 2×1123139088² = 2522882821986943488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1123139081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299498 + ... + 1300361.

It is an arithmetic number, because the mean of its divisors is an integer number (80595660).

Almost surely, 2^1123139088 is an apocalyptic number.

1123139088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1123139088 is an abundant number, since it is smaller than the sum of its proper divisors (2100687312).

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

1123139088 is a wasteful number, since it uses less digits than its factorization.

1123139088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599876 (or 2599864 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1123139088 is about 33513.2673429494. The cubic root of 1123139088 is about 1039.4681353442.

The spelling of 1123139088 in words is "one billion, one hundred twenty-three million, one hundred thirty-nine thousand, eighty-eight".