180099967 has 4 divisors (see below), whose sum is σ = 180223056. Its totient is φ = 179976880.

The previous prime is 180099943. The next prime is 180099971. The reversal of 180099967 is 769990081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 769990081 = 7 ⋅109998583.

It is a cyclic number.

It is not a de Polignac number, because 180099967 - 2¹¹ = 180097919 is a prime.

It is a super-2 number, since 2×180099967² = 64871996226802178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180099967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180099467) 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, 59323 + ... + 62284.

It is an arithmetic number, because the mean of its divisors is an integer number (45055764).

Almost surely, 2^180099967 is an apocalyptic number.

180099967 is a deficient number, since it is larger than the sum of its proper divisors (123089).

180099967 is a wasteful number, since it uses less digits than its factorization.

180099967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123088.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 180099967 is about 13420.1328980007. The cubic root of 180099967 is about 564.7261230386.

The spelling of 180099967 in words is "one hundred eighty million, ninety-nine thousand, nine hundred sixty-seven".