1158722157 has 8 divisors (see below), whose sum is σ = 1546150176. Its totient is φ = 771887792.

The previous prime is 1158722143. The next prime is 1158722167. The reversal of 1158722157 is 7512278511.

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 1158722157 - 2⁷ = 1158722029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158722107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143838 + ... + 151679.

It is an arithmetic number, because the mean of its divisors is an integer number (193268772).

Almost surely, 2^1158722157 is an apocalyptic number.

It is an amenable number.

1158722157 is a deficient number, since it is larger than the sum of its proper divisors (387428019).

1158722157 is a wasteful number, since it uses less digits than its factorization.

1158722157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296827.

The product of its digits is 39200, while the sum is 39.

The square root of 1158722157 is about 34040.0081815501. The cubic root of 1158722157 is about 1050.3316131720.

The spelling of 1158722157 in words is "one billion, one hundred fifty-eight million, seven hundred twenty-two thousand, one hundred fifty-seven".