180327994431 has 16 divisors (see below), whose sum is σ = 258950895840. Its totient is φ = 110963191680.

The previous prime is 180327994361. The next prime is 180327994459. The reversal of 180327994431 is 134499723081.

It is a happy number.

It is not a de Polignac number, because 180327994431 - 2¹⁰ = 180327993407 is a prime.

It is a super-2 number, since 2×180327994431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180327994531) 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, 418065 + ... + 731733.

It is an arithmetic number, because the mean of its divisors is an integer number (16184430990).

Almost surely, 2^180327994431 is an apocalyptic number.

180327994431 is a deficient number, since it is larger than the sum of its proper divisors (78622901409).

180327994431 is a wasteful number, since it uses less digits than its factorization.

180327994431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328426.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 180327994431 in words is "one hundred eighty billion, three hundred twenty-seven million, nine hundred ninety-four thousand, four hundred thirty-one".