1189146255 has 48 divisors (see below), whose sum is σ = 2201458560. Its totient is φ = 546194880.

The previous prime is 1189146223. The next prime is 1189146263. The reversal of 1189146255 is 5526419811.

It is a Cunningham number, because it is equal to 34484²-1.

It is not a de Polignac number, because 1189146255 - 2⁵ = 1189146223 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17244 + ... + 51726.

It is an arithmetic number, because the mean of its divisors is an integer number (45863720).

Almost surely, 2^1189146255 is an apocalyptic number.

1189146255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1189146255 is a deficient number, since it is larger than the sum of its proper divisors (1012312305).

1189146255 is a wasteful number, since it uses less digits than its factorization.

1189146255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34532 (or 34521 counting only the distinct ones).

The product of its digits is 86400, while the sum is 42.

The square root of 1189146255 is about 34483.9999855005. Note that the first 4 decimals coincide. The cubic root of 1189146255 is about 1059.4450206848.

The spelling of 1189146255 in words is "one billion, one hundred eighty-nine million, one hundred forty-six thousand, two hundred fifty-five".