18147342 has 16 divisors (see below), whose sum is σ = 36670032. Its totient is φ = 5986560.

The previous prime is 18147329. The next prime is 18147343. The reversal of 18147342 is 24374181.

It is a super-3 number, since 3×18147342³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18147343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15009 + ... + 16172.

It is an arithmetic number, because the mean of its divisors is an integer number (2291877).

Almost surely, 2^18147342 is an apocalyptic number.

18147342 is an abundant number, since it is smaller than the sum of its proper divisors (18522690).

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

18147342 is a wasteful number, since it uses less digits than its factorization.

18147342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31283.

The product of its digits is 5376, while the sum is 30.

The square root of 18147342 is about 4259.9697182022. The cubic root of 18147342 is about 262.7872809488.

The spelling of 18147342 in words is "eighteen million, one hundred forty-seven thousand, three hundred forty-two".