181084540 has 48 divisors (see below), whose sum is σ = 468038592. Its totient is φ = 57309696.

The previous prime is 181084531. The next prime is 181084559. The reversal of 181084540 is 45480181.

181084540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×181084540² = 65583221254023200, which contains 22 as substring.

It is a congruent number.

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, 47929 + ... + 51568.

It is an arithmetic number, because the mean of its divisors is an integer number (9750804).

Almost surely, 2^181084540 is an apocalyptic number.

181084540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181084540 is an abundant number, since it is smaller than the sum of its proper divisors (286954052).

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

181084540 is a wasteful number, since it uses less digits than its factorization.

181084540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99526 (or 99524 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 181084540 is about 13456.7655846418. The cubic root of 181084540 is about 565.7533376460.

The spelling of 181084540 in words is "one hundred eighty-one million, eighty-four thousand, five hundred forty".