180172963 has 4 divisors (see below), whose sum is σ = 181767528. Its totient is φ = 178578400.

The previous prime is 180172957. The next prime is 180172981. The reversal of 180172963 is 369271081.

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

It is a cyclic number.

It is not a de Polignac number, because 180172963 - 2⁵ = 180172931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180172903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797113 + ... + 797338.

It is an arithmetic number, because the mean of its divisors is an integer number (45441882).

Almost surely, 2^180172963 is an apocalyptic number.

180172963 is a deficient number, since it is larger than the sum of its proper divisors (1594565).

180172963 is a wasteful number, since it uses less digits than its factorization.

180172963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594564.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 180172963 is about 13422.8522676814. The cubic root of 180172963 is about 564.8024087828.

The spelling of 180172963 in words is "one hundred eighty million, one hundred seventy-two thousand, nine hundred sixty-three".