213743394 has 16 divisors (see below), whose sum is σ = 474985440. Its totient is φ = 71247780.

The previous prime is 213743389. The next prime is 213743401. The reversal of 213743394 is 493347312.

213743394 is a `hidden beast` number, since 2 + 137 + 433 + 94 = 666.

213743394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1979052 + ... + 1979159.

It is an arithmetic number, because the mean of its divisors is an integer number (29686590).

Almost surely, 2^213743394 is an apocalyptic number.

213743394 is an abundant number, since it is smaller than the sum of its proper divisors (261242046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213743394 is a wasteful number, since it uses less digits than its factorization.

213743394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958222 (or 3958216 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 213743394 is about 14619.9655950348. The cubic root of 213743394 is about 597.9032311360.

The spelling of 213743394 in words is "two hundred thirteen million, seven hundred forty-three thousand, three hundred ninety-four".