158047949 has 2 divisors, whose sum is σ = 158047950. Its totient is φ = 158047948.

The previous prime is 158047937. The next prime is 158047969. The reversal of 158047949 is 949740851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153016900 + 5031049 = 12370^2 + 2243^2 .

It is a cyclic number.

It is not a de Polignac number, because 158047949 - 2⁸ = 158047693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158047969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79023974 + 79023975.

It is an arithmetic number, because the mean of its divisors is an integer number (79023975).

Almost surely, 2^158047949 is an apocalyptic number.

It is an amenable number.

158047949 is a deficient number, since it is larger than the sum of its proper divisors (1).

158047949 is an equidigital number, since it uses as much as digits as its factorization.

158047949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 158047949 is about 12571.7122541045. The cubic root of 158047949 is about 540.6666993975. Note that the first 4 decimals are identical.

The spelling of 158047949 in words is "one hundred fifty-eight million, forty-seven thousand, nine hundred forty-nine".