18167072242 has 8 divisors (see below), whose sum is σ = 29727936432. Its totient is φ = 8257760100.

The previous prime is 18167072237. The next prime is 18167072249. The reversal of 18167072242 is 24227076181.

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 = 18167072195 and 18167072204.

It is not an unprimeable number, because it can be changed into a prime (18167072249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412887984 + ... + 412888027.

It is an arithmetic number, because the mean of its divisors is an integer number (3715992054).

Almost surely, 2^18167072242 is an apocalyptic number.

18167072242 is a deficient number, since it is larger than the sum of its proper divisors (11560864190).

18167072242 is a wasteful number, since it uses less digits than its factorization.

18167072242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825776024.

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 18167072242 in words is "eighteen billion, one hundred sixty-seven million, seventy-two thousand, two hundred forty-two".