180473021 has 8 divisors (see below), whose sum is σ = 189176064. Its totient is φ = 171974880.

The previous prime is 180472987. The next prime is 180473023. The reversal of 180473021 is 120374081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180473021 - 2¹⁰ = 180471997 is a prime.

It is a super-2 number, since 2×180473021² = 65141022617732882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180473023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49421 + ... + 52946.

It is an arithmetic number, because the mean of its divisors is an integer number (23647008).

Almost surely, 2^180473021 is an apocalyptic number.

It is an amenable number.

180473021 is a deficient number, since it is larger than the sum of its proper divisors (8703043).

180473021 is a wasteful number, since it uses less digits than its factorization.

180473021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102451.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 180473021 is about 13434.0247506099. The cubic root of 180473021 is about 565.1157733882.

The spelling of 180473021 in words is "one hundred eighty million, four hundred seventy-three thousand, twenty-one".