180742823 has 4 divisors (see below), whose sum is σ = 180770568. Its totient is φ = 180715080.

The previous prime is 180742813. The next prime is 180742829. The reversal of 180742823 is 328247081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 180742823 - 2¹⁸ = 180480679 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 (180742829) 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, 1808 + ... + 19098.

It is an arithmetic number, because the mean of its divisors is an integer number (45192642).

Almost surely, 2^180742823 is an apocalyptic number.

180742823 is a deficient number, since it is larger than the sum of its proper divisors (27745).

180742823 is a wasteful number, since it uses less digits than its factorization.

180742823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27744.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 180742823 is about 13444.0627415971. The cubic root of 180742823 is about 565.3972438059.

The spelling of 180742823 in words is "one hundred eighty million, seven hundred forty-two thousand, eight hundred twenty-three".