18473342 has 4 divisors (see below), whose sum is σ = 27710016. Its totient is φ = 9236670.

The previous prime is 18473341. The next prime is 18473387. The reversal of 18473342 is 24337481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24337481 = 7 ⋅3476783.

It is a junction number, because it is equal to n+sod(n) for n = 18473299 and 18473308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18473341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4618334 + ... + 4618337.

It is an arithmetic number, because the mean of its divisors is an integer number (6927504).

Almost surely, 2^18473342 is an apocalyptic number.

18473342 is a deficient number, since it is larger than the sum of its proper divisors (9236674).

18473342 is an equidigital number, since it uses as much as digits as its factorization.

18473342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236673.

The product of its digits is 16128, while the sum is 32.

The square root of 18473342 is about 4298.0625867942. The cubic root of 18473342 is about 264.3515270514.

The spelling of 18473342 in words is "eighteen million, four hundred seventy-three thousand, three hundred forty-two".