18355149242 has 8 divisors (see below), whose sum is σ = 27533325600. Its totient is φ = 9177374044.

The previous prime is 18355149209. The next prime is 18355149283. The reversal of 18355149242 is 24294155381.

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 = 18355149193 and 18355149202.

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, 76259 + ... + 206217.

It is an arithmetic number, because the mean of its divisors is an integer number (3441665700).

Almost surely, 2^18355149242 is an apocalyptic number.

18355149242 is a deficient number, since it is larger than the sum of its proper divisors (9178176358).

18355149242 is a wasteful number, since it uses less digits than its factorization.

18355149242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200580.

The product of its digits is 345600, while the sum is 44.

The spelling of 18355149242 in words is "eighteen billion, three hundred fifty-five million, one hundred forty-nine thousand, two hundred forty-two".