1188213085 has 16 divisors (see below), whose sum is σ = 1477070640. Its totient is φ = 916518400.

The previous prime is 1188213067. The next prime is 1188213119. The reversal of 1188213085 is 5803128811.

It can be written as a sum of positive squares in 8 ways, for example, as 18983449 + 1169229636 = 4357^2 + 34194^2 .

It is not a de Polignac number, because 1188213085 - 2⁷ = 1188212957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106785 + ... + 117385.

It is an arithmetic number, because the mean of its divisors is an integer number (92316915).

Almost surely, 2^1188213085 is an apocalyptic number.

It is an amenable number.

1188213085 is a deficient number, since it is larger than the sum of its proper divisors (288857555).

1188213085 is a wasteful number, since it uses less digits than its factorization.

1188213085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 1188213085 is about 34470.4668520750. The cubic root of 1188213085 is about 1059.1678187210.

The spelling of 1188213085 in words is "one billion, one hundred eighty-eight million, two hundred thirteen thousand, eighty-five".