1238223827 has 4 divisors (see below), whose sum is σ = 1238352696. Its totient is φ = 1238094960.

The previous prime is 1238223809. The next prime is 1238223841. The reversal of 1238223827 is 7283228321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7283228321 = 947 ⋅7690843.

It is a cyclic number.

It is not a de Polignac number, because 1238223827 - 2¹⁰ = 1238222803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238223127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48749 + ... + 69662.

It is an arithmetic number, because the mean of its divisors is an integer number (309588174).

Almost surely, 2^1238223827 is an apocalyptic number.

1238223827 is a deficient number, since it is larger than the sum of its proper divisors (128869).

1238223827 is a wasteful number, since it uses less digits than its factorization.

1238223827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128868.

The product of its digits is 64512, while the sum is 38.

The square root of 1238223827 is about 35188.4047237155. The cubic root of 1238223827 is about 1073.8238665996.

The spelling of 1238223827 in words is "one billion, two hundred thirty-eight million, two hundred twenty-three thousand, eight hundred twenty-seven".