180344642 has 8 divisors (see below), whose sum is σ = 272999100. Its totient is φ = 89344944.

The previous prime is 180344627. The next prime is 180344663. The reversal of 180344642 is 246443081.

It can be written as a sum of positive squares in 2 ways, for example, as 163047361 + 17297281 = 12769^2 + 4159^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 180344599 and 180344608.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 413417 + ... + 413852.

Almost surely, 2^180344642 is an apocalyptic number.

180344642 is a deficient number, since it is larger than the sum of its proper divisors (92654458).

180344642 is a wasteful number, since it uses less digits than its factorization.

180344642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827380.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 180344642 is about 13429.2457718220. The cubic root of 180344642 is about 564.9817437388.

The spelling of 180344642 in words is "one hundred eighty million, three hundred forty-four thousand, six hundred forty-two".