181113450 has 48 divisors (see below), whose sum is σ = 513330240. Its totient is φ = 41397120.

The previous prime is 181113437. The next prime is 181113451. The reversal of 181113450 is 54311181.

181113450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 181113450.

It is not an unprimeable number, because it can be changed into a prime (181113451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85195 + ... + 87294.

It is an arithmetic number, because the mean of its divisors is an integer number (10694380).

Almost surely, 2^181113450 is an apocalyptic number.

181113450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181113450 is an abundant number, since it is smaller than the sum of its proper divisors (332216790).

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

181113450 is a wasteful number, since it uses less digits than its factorization.

181113450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172511 (or 172506 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 181113450 is about 13457.8397226301. The cubic root of 181113450 is about 565.7834433978.

The spelling of 181113450 in words is "one hundred eighty-one million, one hundred thirteen thousand, four hundred fifty".