158736449 has 2 divisors, whose sum is σ = 158736450. Its totient is φ = 158736448.

The previous prime is 158736419. The next prime is 158736451. The reversal of 158736449 is 944637851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121000000 + 37736449 = 11000^2 + 6143^2 .

It is a cyclic number.

It is not a de Polignac number, because 158736449 - 2¹⁶ = 158670913 is a prime.

It is a super-2 number, since 2×158736449² = 50394520482259202, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 158736451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (158736419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79368224 + 79368225.

It is an arithmetic number, because the mean of its divisors is an integer number (79368225).

Almost surely, 2^158736449 is an apocalyptic number.

It is an amenable number.

158736449 is a deficient number, since it is larger than the sum of its proper divisors (1).

158736449 is an equidigital number, since it uses as much as digits as its factorization.

158736449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 158736449 is about 12599.0654018463. The cubic root of 158736449 is about 541.4506593494.

It can be divided in two parts, 15873 and 6449, that added together give a palindrome (22322).

The spelling of 158736449 in words is "one hundred fifty-eight million, seven hundred thirty-six thousand, four hundred forty-nine".