1188064281 has 16 divisors (see below), whose sum is σ = 1673373440. Its totient is φ = 747694800.

The previous prime is 1188064253. The next prime is 1188064289. The reversal of 1188064281 is 1824608811.

It is not a de Polignac number, because 1188064281 - 2⁵ = 1188064249 is a prime.

It is a super-2 number, since 2×1188064281² = 2822993471576093922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1188064289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20695 + ... + 52956.

It is an arithmetic number, because the mean of its divisors is an integer number (104585840).

Almost surely, 2^1188064281 is an apocalyptic number.

It is an amenable number.

1188064281 is a deficient number, since it is larger than the sum of its proper divisors (485309159).

1188064281 is a wasteful number, since it uses less digits than its factorization.

1188064281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73956.

The product of its (nonzero) digits is 24576, while the sum is 39.

The square root of 1188064281 is about 34468.3083570981. The cubic root of 1188064281 is about 1059.1236024689.

The spelling of 1188064281 in words is "one billion, one hundred eighty-eight million, sixty-four thousand, two hundred eighty-one".