2189826770 has 8 divisors (see below), whose sum is σ = 3941688204. Its totient is φ = 875930704.

The previous prime is 2189826767. The next prime is 2189826787. The reversal of 2189826770 is 776289812.

It can be written as a sum of positive squares in 2 ways, for example, as 2162901049 + 26925721 = 46507^2 + 5189^2 .

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, 109491329 + ... + 109491348.

Almost surely, 2^2189826770 is an apocalyptic number.

2189826770 is a deficient number, since it is larger than the sum of its proper divisors (1751861434).

2189826770 is a wasteful number, since it uses less digits than its factorization.

2189826770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218982684.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 2189826770 is about 46795.5849413168. The cubic root of 2189826770 is about 1298.5836191155.

The spelling of 2189826770 in words is "two billion, one hundred eighty-nine million, eight hundred twenty-six thousand, seven hundred seventy".