1084988189 has 4 divisors (see below), whose sum is σ = 1119987840. Its totient is φ = 1049988540.

The previous prime is 1084988173. The next prime is 1084988197. The reversal of 1084988189 is 9818894801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9818894801 = 14519 ⋅676279.

It is a cyclic number.

It is not a de Polignac number, because 1084988189 - 2⁴ = 1084988173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1084988129) 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, 17499779 + ... + 17499840.

It is an arithmetic number, because the mean of its divisors is an integer number (279996960).

Almost surely, 2^1084988189 is an apocalyptic number.

It is an amenable number.

1084988189 is a deficient number, since it is larger than the sum of its proper divisors (34999651).

1084988189 is an equidigital number, since it uses as much as digits as its factorization.

1084988189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34999650.

The product of its (nonzero) digits is 1327104, while the sum is 56.

The square root of 1084988189 is about 32939.1588994012. The cubic root of 1084988189 is about 1027.5627133398.

The spelling of 1084988189 in words is "one billion, eighty-four million, nine hundred eighty-eight thousand, one hundred eighty-nine".