180989743 has 6 divisors (see below), whose sum is σ = 198939272. Its totient is φ = 164536020.

The previous prime is 180989729. The next prime is 180989747. The reversal of 180989743 is 347989081.

It is a happy number.

It is not a de Polignac number, because 180989743 - 2²⁵ = 147435311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180989747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 747771 + ... + 748012.

Almost surely, 2^180989743 is an apocalyptic number.

180989743 is a deficient number, since it is larger than the sum of its proper divisors (17949529).

180989743 is a wasteful number, since it uses less digits than its factorization.

180989743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495805 (or 1495794 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 180989743 is about 13453.2428432702. The cubic root of 180989743 is about 565.6545972445.

The spelling of 180989743 in words is "one hundred eighty million, nine hundred eighty-nine thousand, seven hundred forty-three".