1123144650 has 144 divisors (see below), whose sum is σ = 3161404800. Its totient is φ = 293196960.

The previous prime is 1123144637. The next prime is 1123144691. The reversal of 1123144650 is 564413211.

It is a happy number.

1123144650 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 1 + 4 + 4 + 650 = 666.

It is a super-2 number, since 2×1123144650² = 2522907809647245000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4699231 + ... + 4699469.

It is an arithmetic number, because the mean of its divisors is an integer number (21954200).

Almost surely, 2^1123144650 is an apocalyptic number.

1123144650 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 1123144650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580702400).

1123144650 is an abundant number, since it is smaller than the sum of its proper divisors (2038260150).

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

1123144650 is a wasteful number, since it uses less digits than its factorization.

1123144650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1123144650 is about 33513.3503249078. The cubic root of 1123144650 is about 1039.4698512232.

Adding to 1123144650 its reverse (564413211), we get a palindrome (1687557861).

It can be divided in two parts, 112314 and 4650, that added together give a square (116964 = 342²).

The spelling of 1123144650 in words is "one billion, one hundred twenty-three million, one hundred forty-four thousand, six hundred fifty".