181000352 has 36 divisors (see below), whose sum is σ = 385875630. Its totient is φ = 83536128.

The previous prime is 181000307. The next prime is 181000357. The reversal of 181000352 is 253000181.

It can be written as a sum of positive squares in 3 ways, for example, as 74580496 + 106419856 = 8636^2 + 10316^2 .

It is a super-2 number, since 2×181000352² = 65522254848247808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (181000357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11327 + ... + 22142.

Almost surely, 2^181000352 is an apocalyptic number.

It is an amenable number.

181000352 is an abundant number, since it is smaller than the sum of its proper divisors (204875278).

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

181000352 is a wasteful number, since it uses less digits than its factorization.

181000352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33505 (or 33484 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 181000352 is about 13453.6371290443. The cubic root of 181000352 is about 565.6656492748.

The spelling of 181000352 in words is "one hundred eighty-one million, three hundred fifty-two", and thus it is an aban number.