18157342 has 24 divisors (see below), whose sum is σ = 32462640. Its totient is φ = 7590240.

The previous prime is 18157339. The next prime is 18157361. The reversal of 18157342 is 24375181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1759 + ... + 6277.

It is an arithmetic number, because the mean of its divisors is an integer number (1352610).

Almost surely, 2^18157342 is an apocalyptic number.

18157342 is a deficient number, since it is larger than the sum of its proper divisors (14305298).

18157342 is a wasteful number, since it uses less digits than its factorization.

18157342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576 (or 4569 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 18157342 is about 4261.1432738175. The cubic root of 18157342 is about 262.8355412811.

The spelling of 18157342 in words is "eighteen million, one hundred fifty-seven thousand, three hundred forty-two".