180012769 has 4 divisors (see below), whose sum is σ = 182963860. Its totient is φ = 177061680.

The previous prime is 180012739. The next prime is 180012787. The reversal of 180012769 is 967210081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65415744 + 114597025 = 8088^2 + 10705^2 .

It is a cyclic number.

It is not a de Polignac number, because 180012769 - 2¹³ = 180004577 is a prime.

It is a super-2 number, since 2×180012769² = 64809194006094722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180012739) 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, 1475454 + ... + 1475575.

It is an arithmetic number, because the mean of its divisors is an integer number (45740965).

Almost surely, 2^180012769 is an apocalyptic number.

It is an amenable number.

180012769 is a deficient number, since it is larger than the sum of its proper divisors (2951091).

180012769 is an equidigital number, since it uses as much as digits as its factorization.

180012769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951090.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 180012769 is about 13416.8837290930. The cubic root of 180012769 is about 564.6349682230.

The spelling of 180012769 in words is "one hundred eighty million, twelve thousand, seven hundred sixty-nine".