213713849 has 4 divisors (see below), whose sum is σ = 215605236. Its totient is φ = 211822464.

The previous prime is 213713837. The next prime is 213713869. The reversal of 213713849 is 948317312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26708224 + 187005625 = 5168^2 + 13675^2 .

It is a cyclic number.

It is not a de Polignac number, because 213713849 - 2⁴ = 213713833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213713809) 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, 945524 + ... + 945749.

It is an arithmetic number, because the mean of its divisors is an integer number (53901309).

Almost surely, 2^213713849 is an apocalyptic number.

It is an amenable number.

213713849 is a deficient number, since it is larger than the sum of its proper divisors (1891387).

213713849 is a wasteful number, since it uses less digits than its factorization.

213713849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891386.

The product of its digits is 36288, while the sum is 38.

The square root of 213713849 is about 14618.9551268208. The cubic root of 213713849 is about 597.8756811775.

The spelling of 213713849 in words is "two hundred thirteen million, seven hundred thirteen thousand, eight hundred forty-nine".