180686490 has 16 divisors (see below), whose sum is σ = 433647648. Its totient is φ = 48183056.

The previous prime is 180686483. The next prime is 180686531. The reversal of 180686490 is 94686081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3011412 + ... + 3011471.

It is an arithmetic number, because the mean of its divisors is an integer number (27102978).

Almost surely, 2^180686490 is an apocalyptic number.

180686490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180686490 is an abundant number, since it is smaller than the sum of its proper divisors (252961158).

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

180686490 is a wasteful number, since it uses less digits than its factorization.

180686490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6022893.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 180686490 is about 13441.9674899175. The cubic root of 180686490 is about 565.3384976605.

The spelling of 180686490 in words is "one hundred eighty million, six hundred eighty-six thousand, four hundred ninety".