180773021 has 16 divisors (see below), whose sum is σ = 212795520. Its totient is φ = 151398720.

The previous prime is 180772967. The next prime is 180773027. The reversal of 180773021 is 120377081.

It is not a de Polignac number, because 180773021 - 2⁶ = 180772957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180773027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100496 + ... + 102278.

It is an arithmetic number, because the mean of its divisors is an integer number (13299720).

Almost surely, 2^180773021 is an apocalyptic number.

180773021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

180773021 is a deficient number, since it is larger than the sum of its proper divisors (32022499).

180773021 is a wasteful number, since it uses less digits than its factorization.

180773021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 180773021 is about 13445.1857926917. The cubic root of 180773021 is about 565.4287303769.

The spelling of 180773021 in words is "one hundred eighty million, seven hundred seventy-three thousand, twenty-one".