1161866027 has 16 divisors (see below), whose sum is σ = 1349263872. Its totient is φ = 979948800.

The previous prime is 1161866011. The next prime is 1161866047. The reversal of 1161866027 is 7206681611.

It is not a de Polignac number, because 1161866027 - 2⁴ = 1161866011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161866047) 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, 107963 + ... + 118235.

It is an arithmetic number, because the mean of its divisors is an integer number (84328992).

Almost surely, 2^1161866027 is an apocalyptic number.

1161866027 is a deficient number, since it is larger than the sum of its proper divisors (187397845).

1161866027 is a wasteful number, since it uses less digits than its factorization.

1161866027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1161866027 is about 34086.1559434325. The cubic root of 1161866027 is about 1051.2806828214.

The spelling of 1161866027 in words is "one billion, one hundred sixty-one million, eight hundred sixty-six thousand, twenty-seven".