2171000836 has 9 divisors (see below), whose sum is σ = 3799414549. Its totient is φ = 1085453824.

The previous prime is 2171000791. The next prime is 2171000879. The reversal of 2171000836 is 6380001712.

The square root of 2171000836 is 46594.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 222308100 + 1948692736 = 14910^2 + 44144^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 81540 + ... + 104836.

Almost surely, 2^2171000836 is an apocalyptic number.

2171000836 is the 46594-th square number.

It is an amenable number.

2171000836 is a deficient number, since it is larger than the sum of its proper divisors (1628413713).

2171000836 is an frugal number, since it uses more digits than its factorization.

2171000836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46598 (or 23299 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The cubic root of 2171000836 is about 1294.8515974106.

The spelling of 2171000836 in words is "two billion, one hundred seventy-one million, eight hundred thirty-six", and thus it is an aban number.