1123489755 has 24 divisors (see below), whose sum is σ = 2010203520. Its totient is φ = 579864960.

The previous prime is 1123489733. The next prime is 1123489769. The reversal of 1123489755 is 5579843211.

1123489755 is a `hidden beast` number, since 112 + 3 + 489 + 7 + 55 = 666.

It is not a de Polignac number, because 1123489755 - 2⁶ = 1123489691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1123489755.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401290 + ... + 404079.

It is an arithmetic number, because the mean of its divisors is an integer number (83758480).

Almost surely, 2^1123489755 is an apocalyptic number.

1123489755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1123489755 is a deficient number, since it is larger than the sum of its proper divisors (886713765).

1123489755 is a wasteful number, since it uses less digits than its factorization.

1123489755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805411 (or 805408 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 1123489755 is about 33518.4986984799. The cubic root of 1123489755 is about 1039.5763051596.

The spelling of 1123489755 in words is "one billion, one hundred twenty-three million, four hundred eighty-nine thousand, seven hundred fifty-five".