180678690 has 48 divisors (see below), whose sum is σ = 480699648. Its totient is φ = 47059488.

The previous prime is 180678683. The next prime is 180678691. The reversal of 180678690 is 96876081.

It is a happy number.

180678690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×180678690² = 65289578040232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (180678691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19474 + ... + 27213.

It is an arithmetic number, because the mean of its divisors is an integer number (10014576).

Almost surely, 2^180678690 is an apocalyptic number.

180678690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180678690 is an abundant number, since it is smaller than the sum of its proper divisors (300020958).

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

180678690 is a wasteful number, since it uses less digits than its factorization.

180678690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46743 (or 46740 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 180678690 is about 13441.6773506880. The cubic root of 180678690 is about 565.3303625683.

The spelling of 180678690 in words is "one hundred eighty million, six hundred seventy-eight thousand, six hundred ninety".