158563649 has 4 divisors (see below), whose sum is σ = 158595780. Its totient is φ = 158531520.

The previous prime is 158563627. The next prime is 158563681. The reversal of 158563649 is 946365851.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946365851 = 19 ⋅49808729.

It can be written as a sum of positive squares in 2 ways, for example, as 97614400 + 60949249 = 9880^2 + 7807^2 .

It is a cyclic number.

It is not a de Polignac number, because 158563649 - 2⁸ = 158563393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158563549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6932 + ... + 19109.

It is an arithmetic number, because the mean of its divisors is an integer number (39648945).

Almost surely, 2^158563649 is an apocalyptic number.

It is an amenable number.

158563649 is a deficient number, since it is larger than the sum of its proper divisors (32131).

158563649 is an equidigital number, since it uses as much as digits as its factorization.

158563649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32130.

The product of its digits is 777600, while the sum is 47.

The square root of 158563649 is about 12592.2058830056. The cubic root of 158563649 is about 541.2541141834.

The spelling of 158563649 in words is "one hundred fifty-eight million, five hundred sixty-three thousand, six hundred forty-nine".