213840462194 has 4 divisors (see below), whose sum is σ = 320760693294. Its totient is φ = 106920231096.

The previous prime is 213840462193. The next prime is 213840462203. The reversal of 213840462194 is 491264048312.

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

It can be written as a sum of positive squares in only one way, i.e., 138812130625 + 75028331569 = 372575^2 + 273913^2 .

It is not an unprimeable number, because it can be changed into a prime (213840462193) by changing a digit.

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 as a sum of consecutive naturals, namely, 53460115547 + ... + 53460115550.

Almost surely, 2^213840462194 is an apocalyptic number.

213840462194 is a deficient number, since it is larger than the sum of its proper divisors (106920231100).

213840462194 is a wasteful number, since it uses less digits than its factorization.

213840462194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106920231099.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 213840462194 in words is "two hundred thirteen billion, eight hundred forty million, four hundred sixty-two thousand, one hundred ninety-four".