180073978 has 32 divisors (see below), whose sum is σ = 322560000. Its totient is φ = 73770480.

The previous prime is 180073951. The next prime is 180073987. The reversal of 180073978 is 879370081.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33523 + ... + 38521.

It is an arithmetic number, because the mean of its divisors is an integer number (10080000).

Almost surely, 2^180073978 is an apocalyptic number.

180073978 is a deficient number, since it is larger than the sum of its proper divisors (142486022).

180073978 is a wasteful number, since it uses less digits than its factorization.

180073978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 180073978 is about 13419.1645790638. The cubic root of 180073978 is about 564.6989578046.

The spelling of 180073978 in words is "one hundred eighty million, seventy-three thousand, nine hundred seventy-eight".