180145402 has 8 divisors (see below), whose sum is σ = 278934912. Its totient is φ = 87167100.

The previous prime is 180145387. The next prime is 180145409. The reversal of 180145402 is 204541081.

180145402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (180145409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452724 + ... + 1452847.

It is an arithmetic number, because the mean of its divisors is an integer number (34866864).

Almost surely, 2^180145402 is an apocalyptic number.

180145402 is a deficient number, since it is larger than the sum of its proper divisors (98789510).

180145402 is a wasteful number, since it uses less digits than its factorization.

180145402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905604.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 180145402 is about 13421.8255837274. The cubic root of 180145402 is about 564.7736081001.

Adding to 180145402 its reverse (204541081), we get a palindrome (384686483).

The spelling of 180145402 in words is "one hundred eighty million, one hundred forty-five thousand, four hundred two".