2189339578 has 8 divisors (see below), whose sum is σ = 3294369972. Its totient is φ = 1091216256.

The previous prime is 2189339563. The next prime is 2189339627. The reversal of 2189339578 is 8759339812.

It can be written as a sum of positive squares in 2 ways, for example, as 1623042369 + 566297209 = 40287^2 + 23797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1725975 + ... + 1727242.

Almost surely, 2^2189339578 is an apocalyptic number.

2189339578 is a deficient number, since it is larger than the sum of its proper divisors (1105030394).

2189339578 is a wasteful number, since it uses less digits than its factorization.

2189339578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453536.

The product of its digits is 3265920, while the sum is 55.

The square root of 2189339578 is about 46790.3791179341. The cubic root of 2189339578 is about 1298.4873091421.

The spelling of 2189339578 in words is "two billion, one hundred eighty-nine million, three hundred thirty-nine thousand, five hundred seventy-eight".