180863945 has 16 divisors (see below), whose sum is σ = 228795840. Its totient is φ = 136874304.

The previous prime is 180863941. The next prime is 180863953. The reversal of 180863945 is 549368081.

It is a cyclic number.

It is not a de Polignac number, because 180863945 - 2² = 180863941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 180863896 and 180863905.

It is not an unprimeable number, because it can be changed into a prime (180863941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109667 + ... + 111303.

It is an arithmetic number, because the mean of its divisors is an integer number (14299740).

Almost surely, 2^180863945 is an apocalyptic number.

It is an amenable number.

180863945 is a deficient number, since it is larger than the sum of its proper divisors (47931895).

180863945 is a wasteful number, since it uses less digits than its factorization.

180863945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 180863945 is about 13448.5666522496. The cubic root of 180863945 is about 565.5235130027.

The spelling of 180863945 in words is "one hundred eighty million, eight hundred sixty-three thousand, nine hundred forty-five".