213930845 has 8 divisors (see below), whose sum is σ = 264998400. Its totient is φ = 165623760.

The previous prime is 213930833. The next prime is 213930853. The reversal of 213930845 is 548039312.

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

It is not a de Polignac number, because 213930845 - 2²⁰ = 212882269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689945 + ... + 690254.

It is an arithmetic number, because the mean of its divisors is an integer number (33124800).

Almost surely, 2^213930845 is an apocalyptic number.

It is an amenable number.

213930845 is a deficient number, since it is larger than the sum of its proper divisors (51067555).

213930845 is a wasteful number, since it uses less digits than its factorization.

213930845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380235.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 213930845 is about 14626.3749781003. The cubic root of 213930845 is about 598.0779652861.

The spelling of 213930845 in words is "two hundred thirteen million, nine hundred thirty thousand, eight hundred forty-five".