18734734 has 8 divisors (see below), whose sum is σ = 28135440. Its totient is φ = 9356256.

The previous prime is 18734707. The next prime is 18734743. The reversal of 18734734 is 43743781.

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

It is a junction number, because it is equal to n+sod(n) for n = 18734693 and 18734702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3259 + ... + 6934.

It is an arithmetic number, because the mean of its divisors is an integer number (3516930).

Almost surely, 2^18734734 is an apocalyptic number.

18734734 is a deficient number, since it is larger than the sum of its proper divisors (9400706).

18734734 is a wasteful number, since it uses less digits than its factorization.

18734734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11114.

The product of its digits is 56448, while the sum is 37.

The square root of 18734734 is about 4328.3638941291. The cubic root of 18734734 is about 265.5925225159.

The spelling of 18734734 in words is "eighteen million, seven hundred thirty-four thousand, seven hundred thirty-four".