19974364 has 6 divisors (see below), whose sum is σ = 34955144. Its totient is φ = 9987180.

The previous prime is 19974319. The next prime is 19974397. The reversal of 19974364 is 46347991.

It is a self number, because there is not a number n which added to its sum of digits gives 19974364.

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 as a sum of consecutive naturals, namely, 2496792 + ... + 2496799.

Almost surely, 2^19974364 is an apocalyptic number.

It is an amenable number.

19974364 is a deficient number, since it is larger than the sum of its proper divisors (14980780).

19974364 is a wasteful number, since it uses less digits than its factorization.

19974364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993595 (or 4993593 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 19974364 is about 4469.2688440057. The cubic root of 19974364 is about 271.3257340539.

The spelling of 19974364 in words is "nineteen million, nine hundred seventy-four thousand, three hundred sixty-four".