145818223 has 8 divisors (see below), whose sum is σ = 147690000. Its totient is φ = 143951808.

The previous prime is 145818193. The next prime is 145818247. The reversal of 145818223 is 322818541.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 145818223 - 2²⁵ = 112263791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145818523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96528 + ... + 98026.

It is an arithmetic number, because the mean of its divisors is an integer number (18461250).

Almost surely, 2^145818223 is an apocalyptic number.

145818223 is a deficient number, since it is larger than the sum of its proper divisors (1871777).

145818223 is a wasteful number, since it uses less digits than its factorization.

145818223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681.

The product of its digits is 15360, while the sum is 34.

The square root of 145818223 is about 12075.5216450471. The cubic root of 145818223 is about 526.3451196913.

The spelling of 145818223 in words is "one hundred forty-five million, eight hundred eighteen thousand, two hundred twenty-three".