18159320348 has 24 divisors (see below), whose sum is σ = 34227042528. Its totient is φ = 8380316736.

The previous prime is 18159320329. The next prime is 18159320353. The reversal of 18159320348 is 84302395181.

It is a super-2 number, since 2×18159320348² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18159320299 and 18159320308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819665 + ... + 841527.

It is an arithmetic number, because the mean of its divisors is an integer number (1426126772).

Almost surely, 2^18159320348 is an apocalyptic number.

It is an amenable number.

18159320348 is a deficient number, since it is larger than the sum of its proper divisors (16067722180).

18159320348 is a wasteful number, since it uses less digits than its factorization.

18159320348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37853 (or 37851 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 18159320348 in words is "eighteen billion, one hundred fifty-nine million, three hundred twenty thousand, three hundred forty-eight".