146520018 has 12 divisors (see below), whose sum is σ = 317460078. Its totient is φ = 48840000.

The previous prime is 146520013. The next prime is 146520029. The reversal of 146520018 is 810025641.

146520018 is a `hidden beast` number, since 1 + 4 + 652 + 0 + 0 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 142491969 + 4028049 = 11937^2 + 2007^2 .

It is a junction number, because it is equal to n+sod(n) for n = 146519973 and 146520000.

It is not an unprimeable number, because it can be changed into a prime (146520013) 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 5 ways as a sum of consecutive naturals, for example, 4069983 + ... + 4070018.

Almost surely, 2^146520018 is an apocalyptic number.

146520018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

146520018 is an abundant number, since it is smaller than the sum of its proper divisors (170940060).

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

146520018 is a wasteful number, since it uses less digits than its factorization.

146520018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8140009 (or 8140006 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 146520018 is about 12104.5453446216. The cubic root of 146520018 is about 527.1881678598.

Adding to 146520018 its reverse (810025641), we get a palindrome (956545659).

The spelling of 146520018 in words is "one hundred forty-six million, five hundred twenty thousand, eighteen".