194021436 has 48 divisors (see below), whose sum is σ = 534087680. Its totient is φ = 53645760.

The previous prime is 194021423. The next prime is 194021479. The reversal of 194021436 is 634120491.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34651 + ... + 39858.

Almost surely, 2^194021436 is an apocalyptic number.

It is an amenable number.

194021436 is an abundant number, since it is smaller than the sum of its proper divisors (340066244).

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

194021436 is a wasteful number, since it uses less digits than its factorization.

194021436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74554 (or 74552 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 194021436 is about 13929.1577634830. The cubic root of 194021436 is about 578.9173580970.

The spelling of 194021436 in words is "one hundred ninety-four million, twenty-one thousand, four hundred thirty-six".