2171364730 has 32 divisors (see below), whose sum is σ = 3932334864. Its totient is φ = 863256576.

The previous prime is 2171364719. The next prime is 2171364739. The reversal of 2171364730 is 374631712.

It can be written as a sum of positive squares in 8 ways, for example, as 1744983529 + 426381201 = 41773^2 + 20649^2 .

It is not an unprimeable number, because it can be changed into a prime (2171364739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1986064 + ... + 1987156.

Almost surely, 2^2171364730 is an apocalyptic number.

2171364730 is a deficient number, since it is larger than the sum of its proper divisors (1760970134).

2171364730 is a wasteful number, since it uses less digits than its factorization.

2171364730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 2171364730 is about 46597.9047812238. The cubic root of 2171364730 is about 1294.9239392227.

The spelling of 2171364730 in words is "two billion, one hundred seventy-one million, three hundred sixty-four thousand, seven hundred thirty".