980855189 has 4 divisors (see below), whose sum is σ = 981202080. Its totient is φ = 980508300.

The previous prime is 980855179. The next prime is 980855191. The reversal of 980855189 is 981558089.

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: 981558089 = 37 ⋅26528597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980855189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 980855189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980855129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169169 + ... + 174870.

It is an arithmetic number, because the mean of its divisors is an integer number (245300520).

Almost surely, 2^980855189 is an apocalyptic number.

It is an amenable number.

980855189 is a deficient number, since it is larger than the sum of its proper divisors (346891).

980855189 is a wasteful number, since it uses less digits than its factorization.

980855189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346890.

The product of its (nonzero) digits is 1036800, while the sum is 53.

The square root of 980855189 is about 31318.6077117103. The cubic root of 980855189 is about 993.5772327109.

The spelling of 980855189 in words is "nine hundred eighty million, eight hundred fifty-five thousand, one hundred eighty-nine".