158117293 has 2 divisors, whose sum is σ = 158117294. Its totient is φ = 158117292.

The previous prime is 158117291. The next prime is 158117303. The reversal of 158117293 is 392711851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157201444 + 915849 = 12538^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 158117293 - 2¹ = 158117291 is a prime.

Together with 158117291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158117291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79058646 + 79058647.

It is an arithmetic number, because the mean of its divisors is an integer number (79058647).

Almost surely, 2^158117293 is an apocalyptic number.

It is an amenable number.

158117293 is a deficient number, since it is larger than the sum of its proper divisors (1).

158117293 is an equidigital number, since it uses as much as digits as its factorization.

158117293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The square root of 158117293 is about 12574.4698894228. The cubic root of 158117293 is about 540.7457608679.

It can be divided in two parts, 15811 and 7293, that added together give a square (23104 = 152²).

The spelling of 158117293 in words is "one hundred fifty-eight million, one hundred seventeen thousand, two hundred ninety-three".