158340769 has 2 divisors, whose sum is σ = 158340770. Its totient is φ = 158340768.

The previous prime is 158340731. The next prime is 158340779. The reversal of 158340769 is 967043851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134281744 + 24059025 = 11588^2 + 4905^2 .

It is a cyclic number.

It is not a de Polignac number, because 158340769 - 2⁷ = 158340641 is a prime.

It is a super-2 number, since 2×158340769² = 50143598255022722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158340779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79170384 + 79170385.

It is an arithmetic number, because the mean of its divisors is an integer number (79170385).

Almost surely, 2^158340769 is an apocalyptic number.

It is an amenable number.

158340769 is a deficient number, since it is larger than the sum of its proper divisors (1).

158340769 is an equidigital number, since it uses as much as digits as its factorization.

158340769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 158340769 is about 12583.3528520820. The cubic root of 158340769 is about 541.0003963357. Note that the first 3 decimals are identical.

The spelling of 158340769 in words is "one hundred fifty-eight million, three hundred forty thousand, seven hundred sixty-nine".