1123545450 has 24 divisors (see below), whose sum is σ = 2786393088. Its totient is φ = 299612080.

The previous prime is 1123545403. The next prime is 1123545457. The reversal of 1123545450 is 545453211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1123545457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3745002 + ... + 3745301.

It is an arithmetic number, because the mean of its divisors is an integer number (116099712).

Almost surely, 2^1123545450 is an apocalyptic number.

1123545450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123545450 is an abundant number, since it is smaller than the sum of its proper divisors (1662847638).

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

1123545450 is a wasteful number, since it uses less digits than its factorization.

1123545450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7490318 (or 7490313 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1123545450 is about 33519.3294980672. The cubic root of 1123545450 is about 1039.5934832559.

Adding to 1123545450 its reverse (545453211), we get a palindrome (1668998661).

The spelling of 1123545450 in words is "one billion, one hundred twenty-three million, five hundred forty-five thousand, four hundred fifty".