18181486032 has 40 divisors (see below), whose sum is σ = 47009369184. Its totient is φ = 6055265664.

The previous prime is 18181486031. The next prime is 18181486033. The reversal of 18181486032 is 23068418181.

It is an interprime number because it is at equal distance from previous prime (18181486031) and next prime (18181486033).

It is a super-2 number, since 2×18181486032² (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 (18181486031) 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 7 ways as a sum of consecutive naturals, for example, 107023 + ... + 218670.

Almost surely, 2^18181486032 is an apocalyptic number.

18181486032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18181486032 is an abundant number, since it is smaller than the sum of its proper divisors (28827883152).

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

18181486032 is a wasteful number, since it uses less digits than its factorization.

18181486032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326867 (or 326861 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 18181486032 in words is "eighteen billion, one hundred eighty-one million, four hundred eighty-six thousand, thirty-two".