180306769 has 4 divisors (see below), whose sum is σ = 181604080. Its totient is φ = 179009460.

The previous prime is 180306767. The next prime is 180306803. The reversal of 180306769 is 967603081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967603081 = 2221 ⋅435661.

It is a cyclic number.

It is not a de Polignac number, because 180306769 - 2¹ = 180306767 is a prime.

It is a super-2 number, since 2×180306769² = 65021061894438722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180306767) 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, 648447 + ... + 648724.

It is an arithmetic number, because the mean of its divisors is an integer number (45401020).

Almost surely, 2^180306769 is an apocalyptic number.

It is an amenable number.

180306769 is a deficient number, since it is larger than the sum of its proper divisors (1297311).

180306769 is a wasteful number, since it uses less digits than its factorization.

180306769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297310.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 180306769 is about 13427.8356037002. The cubic root of 180306769 is about 564.9421915951.

The spelling of 180306769 in words is "one hundred eighty million, three hundred six thousand, seven hundred sixty-nine".