213749338 has 8 divisors (see below), whose sum is σ = 349771680. Its totient is φ = 97158780.

The previous prime is 213749321. The next prime is 213749339. The reversal of 213749338 is 833947312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 213749338.

It is not an unprimeable number, because it can be changed into a prime (213749339) 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, 4857918 + ... + 4857961.

It is an arithmetic number, because the mean of its divisors is an integer number (43721460).

Almost surely, 2^213749338 is an apocalyptic number.

213749338 is a deficient number, since it is larger than the sum of its proper divisors (136022342).

213749338 is a wasteful number, since it uses less digits than its factorization.

213749338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9715892.

The product of its digits is 108864, while the sum is 40.

The square root of 213749338 is about 14620.1688772736. The cubic root of 213749338 is about 597.9087734576.

The spelling of 213749338 in words is "two hundred thirteen million, seven hundred forty-nine thousand, three hundred thirty-eight".