180342381 has 8 divisors (see below), whose sum is σ = 240777184. Its totient is φ = 120067920.

The previous prime is 180342373. The next prime is 180342397. The reversal of 180342381 is 183243081.

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

It is not a de Polignac number, because 180342381 - 2³ = 180342373 is a prime.

It is a super-2 number, since 2×180342381² = 65046748769498322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180342311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37435 + ... + 41976.

It is an arithmetic number, because the mean of its divisors is an integer number (30097148).

Almost surely, 2^180342381 is an apocalyptic number.

It is an amenable number.

180342381 is a deficient number, since it is larger than the sum of its proper divisors (60434803).

180342381 is an equidigital number, since it uses as much as digits as its factorization.

180342381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80171.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 180342381 is about 13429.1615896153. The cubic root of 180342381 is about 564.9793826502.

The spelling of 180342381 in words is "one hundred eighty million, three hundred forty-two thousand, three hundred eighty-one".