145961218 has 16 divisors (see below), whose sum is σ = 249653880. Its totient is φ = 63403776.

The previous prime is 145961209. The next prime is 145961239. The reversal of 145961218 is 812169541.

It can be written as a sum of positive squares in 4 ways, for example, as 141538609 + 4422609 = 11897^2 + 2103^2 .

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, 164673 + ... + 165556.

Almost surely, 2^145961218 is an apocalyptic number.

145961218 is a deficient number, since it is larger than the sum of its proper divisors (103692662).

145961218 is a wasteful number, since it uses less digits than its factorization.

145961218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330261.

The product of its digits is 17280, while the sum is 37.

The square root of 145961218 is about 12081.4410564303. The cubic root of 145961218 is about 526.5171149553.

The spelling of 145961218 in words is "one hundred forty-five million, nine hundred sixty-one thousand, two hundred eighteen".