1205858223 has 6 divisors (see below), whose sum is σ = 1741795224. Its totient is φ = 803905476.

The previous prime is 1205858207. The next prime is 1205858317. The reversal of 1205858223 is 3228585021.

1205858223 is a `hidden beast` number, since 1 + 2 + 0 + 58 + 582 + 23 = 666.

It is not a de Polignac number, because 1205858223 - 2⁴ = 1205858207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205858323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66992115 + ... + 66992132.

It is an arithmetic number, because the mean of its divisors is an integer number (290299204).

Almost surely, 2^1205858223 is an apocalyptic number.

1205858223 is a deficient number, since it is larger than the sum of its proper divisors (535937001).

1205858223 is a wasteful number, since it uses less digits than its factorization.

1205858223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133984253 (or 133984250 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 1205858223 is about 34725.4693704779. The cubic root of 1205858223 is about 1064.3850102769.

The spelling of 1205858223 in words is "one billion, two hundred five million, eight hundred fifty-eight thousand, two hundred twenty-three".