18037767168 has 132 divisors (see below), whose sum is σ = 52713410568. Its totient is φ = 5939896320.

The previous prime is 18037767133. The next prime is 18037767169. The reversal of 18037767168 is 86176773081.

It is a super-2 number, since 2×18037767168² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18037767169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 753138 + ... + 776718.

Almost surely, 2^18037767168 is an apocalyptic number.

18037767168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18037767168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26356705284).

18037767168 is an abundant number, since it is smaller than the sum of its proper divisors (34675643400).

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

18037767168 is a wasteful number, since it uses less digits than its factorization.

18037767168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690 (or 23669 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 18037767168 in words is "eighteen billion, thirty-seven million, seven hundred sixty-seven thousand, one hundred sixty-eight".