180807145 has 4 divisors (see below), whose sum is σ = 216968580. Its totient is φ = 144645712.

The previous prime is 180807139. The next prime is 180807239. The reversal of 180807145 is 541708081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35652841 + 145154304 = 5971^2 + 12048^2 .

It is a cyclic number.

It is not a de Polignac number, because 180807145 - 2⁵ = 180807113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180807145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18080710 + ... + 18080719.

It is an arithmetic number, because the mean of its divisors is an integer number (54242145).

Almost surely, 2^180807145 is an apocalyptic number.

It is an amenable number.

180807145 is a deficient number, since it is larger than the sum of its proper divisors (36161435).

180807145 is an equidigital number, since it uses as much as digits as its factorization.

180807145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36161434.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 180807145 is about 13446.4547372161. The cubic root of 180807145 is about 565.4643062535.

The spelling of 180807145 in words is "one hundred eighty million, eight hundred seven thousand, one hundred forty-five".