130621178 has 8 divisors (see below), whose sum is σ = 200100672. Its totient is φ = 63920956.

The previous prime is 130621177. The next prime is 130621189. The reversal of 130621178 is 871126031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×130621178³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 130621178.

It is not an unprimeable number, because it can be changed into a prime (130621177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694700 + ... + 694887.

It is an arithmetic number, because the mean of its divisors is an integer number (25012584).

Almost surely, 2^130621178 is an apocalyptic number.

130621178 is a deficient number, since it is larger than the sum of its proper divisors (69479494).

130621178 is a wasteful number, since it uses less digits than its factorization.

130621178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389636.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 130621178 is about 11428.9622451034. The cubic root of 130621178 is about 507.3852821343.

The spelling of 130621178 in words is "one hundred thirty million, six hundred twenty-one thousand, one hundred seventy-eight".