145840218 has 16 divisors (see below), whose sum is σ = 291802176. Its totient is φ = 48593120.

The previous prime is 145840193. The next prime is 145840237. The reversal of 145840218 is 812048541.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20155 + ... + 26417.

It is an arithmetic number, because the mean of its divisors is an integer number (18237636).

Almost surely, 2^145840218 is an apocalyptic number.

145840218 is an abundant number, since it is smaller than the sum of its proper divisors (145961958).

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

145840218 is a wasteful number, since it uses less digits than its factorization.

145840218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 145840218 is about 12076.4323374083. The cubic root of 145840218 is about 526.3715827278.

Adding to 145840218 its reverse (812048541), we get a palindrome (957888759).

The spelling of 145840218 in words is "one hundred forty-five million, eight hundred forty thousand, two hundred eighteen".