158253649 has 2 divisors, whose sum is σ = 158253650. Its totient is φ = 158253648.

The previous prime is 158253647. The next prime is 158253673. The reversal of 158253649 is 946352851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154380625 + 3873024 = 12425^2 + 1968^2 .

It is an emirp because it is prime and its reverse (946352851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158253649 - 2¹ = 158253647 is a prime.

Together with 158253647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (158253643) 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 as a sum of consecutive naturals, namely, 79126824 + 79126825.

It is an arithmetic number, because the mean of its divisors is an integer number (79126825).

Almost surely, 2^158253649 is an apocalyptic number.

It is an amenable number.

158253649 is a deficient number, since it is larger than the sum of its proper divisors (1).

158253649 is an equidigital number, since it uses as much as digits as its factorization.

158253649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 158253649 is about 12579.8906593023. The cubic root of 158253649 is about 540.9011576250.

The spelling of 158253649 in words is "one hundred fifty-eight million, two hundred fifty-three thousand, six hundred forty-nine".