181029036 has 48 divisors (see below), whose sum is σ = 447068160. Its totient is φ = 56854080.

The previous prime is 181029019. The next prime is 181029041. The reversal of 181029036 is 630920181.

It is a junction number, because it is equal to n+sod(n) for n = 181028994 and 181029012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41470 + ... + 45626.

It is an arithmetic number, because the mean of its divisors is an integer number (9313920).

Almost surely, 2^181029036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181029036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223534080).

181029036 is an abundant number, since it is smaller than the sum of its proper divisors (266039124).

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

181029036 is a wasteful number, since it uses less digits than its factorization.

181029036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4372 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 181029036 is about 13454.7031182408. The cubic root of 181029036 is about 565.6955289524.

The spelling of 181029036 in words is "one hundred eighty-one million, twenty-nine thousand, thirty-six".