1118881827 has 18 divisors (see below), whose sum is σ = 1880026668. Its totient is φ = 639360792.

The previous prime is 1118881807. The next prime is 1118881837. The reversal of 1118881827 is 7281888111.

It is a happy number.

It is not a de Polignac number, because 1118881827 - 2¹² = 1118877731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1118881807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1268133 + ... + 1269014.

It is an arithmetic number, because the mean of its divisors is an integer number (104445926).

Almost surely, 2^1118881827 is an apocalyptic number.

1118881827 is a deficient number, since it is larger than the sum of its proper divisors (761144841).

1118881827 is a wasteful number, since it uses less digits than its factorization.

1118881827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537167 (or 2537157 counting only the distinct ones).

The product of its digits is 57344, while the sum is 45.

The square root of 1118881827 is about 33449.6909851197. The cubic root of 1118881827 is about 1038.1531037041.

The spelling of 1118881827 in words is "one billion, one hundred eighteen million, eight hundred eighty-one thousand, eight hundred twenty-seven".