180381078 has 24 divisors (see below), whose sum is σ = 395537688. Its totient is φ = 59402112.

The previous prime is 180381077. The next prime is 180381121. The reversal of 180381078 is 870183081.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180381077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58875 + ... + 61862.

It is an arithmetic number, because the mean of its divisors is an integer number (16480737).

Almost surely, 2^180381078 is an apocalyptic number.

180381078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

180381078 is an abundant number, since it is smaller than the sum of its proper divisors (215156610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180381078 is a wasteful number, since it uses less digits than its factorization.

180381078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120828 (or 120825 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 180381078 is about 13430.6022947595. The cubic root of 180381078 is about 565.0197899456.

The spelling of 180381078 in words is "one hundred eighty million, three hundred eighty-one thousand, seventy-eight".