1027916189 has 4 divisors (see below), whose sum is σ = 1028611740. Its totient is φ = 1027220640.

The previous prime is 1027916177. The next prime is 1027916191. The reversal of 1027916189 is 9816197201.

1027916189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157076089 + 870840100 = 12533^2 + 29510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1027916189 is a prime.

It is a super-2 number, since 2×1027916189² = 2113223383216567442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027916119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345554 + ... + 348515.

It is an arithmetic number, because the mean of its divisors is an integer number (257152935).

Almost surely, 2^1027916189 is an apocalyptic number.

It is an amenable number.

1027916189 is a deficient number, since it is larger than the sum of its proper divisors (695551).

1027916189 is an equidigital number, since it uses as much as digits as its factorization.

1027916189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695550.

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1027916189 is about 32061.1320604872. The cubic root of 1027916189 is about 1009.2201243702.

The spelling of 1027916189 in words is "one billion, twenty-seven million, nine hundred sixteen thousand, one hundred eighty-nine".