180694997 has 12 divisors (see below), whose sum is σ = 221260320. Its totient is φ = 146729016.

The previous prime is 180694961. The next prime is 180694999. The reversal of 180694997 is 799496081.

It is a happy number.

It is not a de Polignac number, because 180694997 - 2⁶ = 180694933 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180694999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96113 + ... + 97974.

It is an arithmetic number, because the mean of its divisors is an integer number (18438360).

Almost surely, 2^180694997 is an apocalyptic number.

It is an amenable number.

180694997 is a deficient number, since it is larger than the sum of its proper divisors (40565323).

180694997 is a wasteful number, since it uses less digits than its factorization.

180694997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194120 (or 194113 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 180694997 is about 13442.2839205248. The cubic root of 180694997 is about 565.3473698588.

The spelling of 180694997 in words is "one hundred eighty million, six hundred ninety-four thousand, nine hundred ninety-seven".