18893734 has 4 divisors (see below), whose sum is σ = 28340604. Its totient is φ = 9446866.

The previous prime is 18893731. The next prime is 18893779. The reversal of 18893734 is 43739881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43739881 = 19 ⋅2302099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18893731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4723432 + ... + 4723435.

It is an arithmetic number, because the mean of its divisors is an integer number (7085151).

Almost surely, 2^18893734 is an apocalyptic number.

18893734 is a deficient number, since it is larger than the sum of its proper divisors (9446870).

18893734 is an equidigital number, since it uses as much as digits as its factorization.

18893734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9446869.

The product of its digits is 145152, while the sum is 43.

The square root of 18893734 is about 4346.6923056504. The cubic root of 18893734 is about 266.3417601978.

The spelling of 18893734 in words is "eighteen million, eight hundred ninety-three thousand, seven hundred thirty-four".