7678030189 has 4 divisors (see below), whose sum is σ = 7865299260. Its totient is φ = 7490761120.

The previous prime is 7678030187. The next prime is 7678030273. The reversal of 7678030189 is 9810308767.

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 1704286089 + 5973744100 = 41283^2 + 77290^2 .

It is a cyclic number.

It is not a de Polignac number, because 7678030189 - 2¹ = 7678030187 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7678030187) 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, 93634474 + ... + 93634555.

It is an arithmetic number, because the mean of its divisors is an integer number (1966324815).

Almost surely, 2^7678030189 is an apocalyptic number.

It is an amenable number.

7678030189 is a deficient number, since it is larger than the sum of its proper divisors (187269071).

7678030189 is a wasteful number, since it uses less digits than its factorization.

7678030189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187269070.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 7678030189 is about 87624.3698351092. The cubic root of 7678030189 is about 1972.8009654691.

The spelling of 7678030189 in words is "seven billion, six hundred seventy-eight million, thirty thousand, one hundred eighty-nine".