180460981 has 8 divisors (see below), whose sum is σ = 185840864. Its totient is φ = 175134960.

The previous prime is 180460963. The next prime is 180460991. The reversal of 180460981 is 189064081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 180460981 - 2⁷ = 180460853 is a prime.

It is a super-2 number, since 2×180460981² = 65132331326964722, 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 180460981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180460991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6615 + ... + 20116.

It is an arithmetic number, because the mean of its divisors is an integer number (23230108).

Almost surely, 2^180460981 is an apocalyptic number.

It is an amenable number.

180460981 is a deficient number, since it is larger than the sum of its proper divisors (5379883).

180460981 is a wasteful number, since it uses less digits than its factorization.

180460981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26931.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 180460981 is about 13433.5766272426. The cubic root of 180460981 is about 565.1032061447.

The spelling of 180460981 in words is "one hundred eighty million, four hundred sixty thousand, nine hundred eighty-one".