210164449 has 4 divisors (see below), whose sum is σ = 229270320. Its totient is φ = 191058580.

The previous prime is 210164441. The next prime is 210164467. The reversal of 210164449 is 944461012.

210164449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210164449 - 2³ = 210164441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210164449.

It is not an unprimeable number, because it can be changed into a prime (210164441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9552919 + ... + 9552940.

It is an arithmetic number, because the mean of its divisors is an integer number (57317580).

Almost surely, 2^210164449 is an apocalyptic number.

It is an amenable number.

210164449 is a deficient number, since it is larger than the sum of its proper divisors (19105871).

210164449 is a wasteful number, since it uses less digits than its factorization.

210164449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19105870.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 210164449 is about 14497.0496653629. The cubic root of 210164449 is about 594.5473090831.

The spelling of 210164449 in words is "two hundred ten million, one hundred sixty-four thousand, four hundred forty-nine".