1188930855 has 48 divisors (see below), whose sum is σ = 2244132864. Its totient is φ = 535832640.

The previous prime is 1188930851. The next prime is 1188930859. The reversal of 1188930855 is 5580398811.

It is an interprime number because it is at equal distance from previous prime (1188930851) and next prime (1188930859).

It is not a de Polignac number, because 1188930855 - 2² = 1188930851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188930851) by changing a digit.

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, 40794 + ... + 63576.

It is an arithmetic number, because the mean of its divisors is an integer number (46752768).

Almost surely, 2^1188930855 is an apocalyptic number.

1188930855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1188930855 is a deficient number, since it is larger than the sum of its proper divisors (1055202009).

1188930855 is a wasteful number, since it uses less digits than its factorization.

1188930855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22876 (or 22869 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 48.

The square root of 1188930855 is about 34480.8766564889. The cubic root of 1188930855 is about 1059.3810481116.

The spelling of 1188930855 in words is "one billion, one hundred eighty-eight million, nine hundred thirty thousand, eight hundred fifty-five".