181049936 has 40 divisors (see below), whose sum is σ = 370437600. Its totient is φ = 85484160.

The previous prime is 181049933. The next prime is 181049959. The reversal of 181049936 is 639940181.

It is a junction number, because it is equal to n+sod(n) for n = 181049893 and 181049902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181049933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117491 + ... + 119021.

It is an arithmetic number, because the mean of its divisors is an integer number (9260940).

Almost surely, 2^181049936 is an apocalyptic number.

181049936 is a gapful number since it is divisible by the number (16) 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 181049936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185218800).

181049936 is an abundant number, since it is smaller than the sum of its proper divisors (189387664).

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

181049936 is a wasteful number, since it uses less digits than its factorization.

181049936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947 (or 1941 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 181049936 is about 13455.4797759129. The cubic root of 181049936 is about 565.7172981702.

The spelling of 181049936 in words is "one hundred eighty-one million, forty-nine thousand, nine hundred thirty-six".