180987678 has 48 divisors (see below), whose sum is σ = 416432016. Its totient is φ = 56613120.

The previous prime is 180987629. The next prime is 180987679. The reversal of 180987678 is 876789081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180987679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140425 + ... + 141707.

It is an arithmetic number, because the mean of its divisors is an integer number (8675667).

Almost surely, 2^180987678 is an apocalyptic number.

180987678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 180987678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208216008).

180987678 is an abundant number, since it is smaller than the sum of its proper divisors (235444338).

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

180987678 is a wasteful number, since it uses less digits than its factorization.

180987678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1766 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The square root of 180987678 is about 13453.1660957560. The cubic root of 180987678 is about 565.6524459602.

The spelling of 180987678 in words is "one hundred eighty million, nine hundred eighty-seven thousand, six hundred seventy-eight".