1153122639 has 4 divisors (see below), whose sum is σ = 1537496856. Its totient is φ = 768748424.

The previous prime is 1153122623. The next prime is 1153122647. The reversal of 1153122639 is 9362213511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1153122639 - 2⁴ = 1153122623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153122539) 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, 192187104 + ... + 192187109.

It is an arithmetic number, because the mean of its divisors is an integer number (384374214).

Almost surely, 2^1153122639 is an apocalyptic number.

1153122639 is a deficient number, since it is larger than the sum of its proper divisors (384374217).

1153122639 is an equidigital number, since it uses as much as digits as its factorization.

1153122639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384374216.

The product of its digits is 9720, while the sum is 33.

The square root of 1153122639 is about 33957.6595041531. The cubic root of 1153122639 is about 1048.6369733427.

The spelling of 1153122639 in words is "one billion, one hundred fifty-three million, one hundred twenty-two thousand, six hundred thirty-nine".