213163838 has 8 divisors (see below), whose sum is σ = 327544560. Its totient is φ = 103982320.

The previous prime is 213163823. The next prime is 213163849. The reversal of 213163838 is 838361312.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213163798 and 213163807.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1299698 + ... + 1299861.

It is an arithmetic number, because the mean of its divisors is an integer number (40943070).

Almost surely, 2^213163838 is an apocalyptic number.

213163838 is a deficient number, since it is larger than the sum of its proper divisors (114380722).

213163838 is a wasteful number, since it uses less digits than its factorization.

213163838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599602.

The product of its digits is 20736, while the sum is 35.

The square root of 213163838 is about 14600.1314377645. The cubic root of 213163838 is about 597.3623456985.

The spelling of 213163838 in words is "two hundred thirteen million, one hundred sixty-three thousand, eight hundred thirty-eight".