1952866209 has 16 divisors (see below), whose sum is σ = 3005262720. Its totient is φ = 1104873600.

The previous prime is 1952866187. The next prime is 1952866217. The reversal of 1952866209 is 9026682591.

It is not a de Polignac number, because 1952866209 - 2⁹ = 1952865697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1952866259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458244 + ... + 462485.

It is an arithmetic number, because the mean of its divisors is an integer number (187828920).

Almost surely, 2^1952866209 is an apocalyptic number.

It is an amenable number.

1952866209 is a deficient number, since it is larger than the sum of its proper divisors (1052396511).

1952866209 is a wasteful number, since it uses less digits than its factorization.

1952866209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920840.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 1952866209 is about 44191.2458412297. The cubic root of 1952866209 is about 1249.9447888147.

The spelling of 1952866209 in words is "one billion, nine hundred fifty-two million, eight hundred sixty-six thousand, two hundred nine".