180328945490 has 8 divisors (see below), whose sum is σ = 324592101900. Its totient is φ = 72131578192.

The previous prime is 180328945469. The next prime is 180328945499. The reversal of 180328945490 is 94549823081.

It can be written as a sum of positive squares in 2 ways, for example, as 170769777049 + 9559168441 = 413243^2 + 97771^2 .

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

It is not an unprimeable number, because it can be changed into a prime (180328945499) 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, 9016447265 + ... + 9016447284.

Almost surely, 2^180328945490 is an apocalyptic number.

180328945490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180328945490 is a deficient number, since it is larger than the sum of its proper divisors (144263156410).

180328945490 is a wasteful number, since it uses less digits than its factorization.

180328945490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18032894556.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 180328945490 in words is "one hundred eighty billion, three hundred twenty-eight million, nine hundred forty-five thousand, four hundred ninety".