1181887255 has 4 divisors (see below), whose sum is σ = 1418264712. Its totient is φ = 945509800.

The previous prime is 1181887253. The next prime is 1181887271. The reversal of 1181887255 is 5527881811.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1181887255 - 2¹ = 1181887253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181887253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118188721 + ... + 118188730.

It is an arithmetic number, because the mean of its divisors is an integer number (354566178).

Almost surely, 2^1181887255 is an apocalyptic number.

1181887255 is a deficient number, since it is larger than the sum of its proper divisors (236377457).

1181887255 is an equidigital number, since it uses as much as digits as its factorization.

1181887255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236377456.

The product of its digits is 179200, while the sum is 46.

The square root of 1181887255 is about 34378.5871582879. The cubic root of 1181887255 is about 1057.2848677574.

The spelling of 1181887255 in words is "one billion, one hundred eighty-one million, eight hundred eighty-seven thousand, two hundred fifty-five".