145663818 has 16 divisors (see below), whose sum is σ = 291483360. Its totient is φ = 48528656.

The previous prime is 145663789. The next prime is 145663841. The reversal of 145663818 is 818366541.

145663818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 145663818.

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, 8248 + ... + 18956.

It is an arithmetic number, because the mean of its divisors is an integer number (18217710).

Almost surely, 2^145663818 is an apocalyptic number.

145663818 is an abundant number, since it is smaller than the sum of its proper divisors (145819542).

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

145663818 is a wasteful number, since it uses less digits than its factorization.

145663818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12981.

The product of its digits is 138240, while the sum is 42.

The square root of 145663818 is about 12069.1266461165. The cubic root of 145663818 is about 526.1592741027.

The spelling of 145663818 in words is "one hundred forty-five million, six hundred sixty-three thousand, eight hundred eighteen".