1238722568 has 8 divisors (see below), whose sum is σ = 2322604830. Its totient is φ = 619361280.

The previous prime is 1238722549. The next prime is 1238722571. The reversal of 1238722568 is 8652278321.

It can be written as a sum of positive squares in only one way, i.e., 761649604 + 477072964 = 27598^2 + 21842^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77420153 + ... + 77420168.

Almost surely, 2^1238722568 is an apocalyptic number.

It is an amenable number.

1238722568 is a deficient number, since it is larger than the sum of its proper divisors (1083882262).

1238722568 is a wasteful number, since it uses less digits than its factorization.

1238722568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154840327 (or 154840323 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 1238722568 is about 35195.4907338994. The cubic root of 1238722568 is about 1073.9680215006.

The spelling of 1238722568 in words is "one billion, two hundred thirty-eight million, seven hundred twenty-two thousand, five hundred sixty-eight".