158468489 has 4 divisors (see below), whose sum is σ = 158598660. Its totient is φ = 158338320.

The previous prime is 158468461. The next prime is 158468491. The reversal of 158468489 is 984864851.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151708489 + 6760000 = 12317^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 158468489 - 2¹² = 158464393 is a prime.

It is a super-2 number, since 2×158468489² = 50224524011886242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158468489.

It is not an unprimeable number, because it can be changed into a prime (158468419) 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 in 3 ways as a sum of consecutive naturals, for example, 63242 + ... + 65699.

It is an arithmetic number, because the mean of its divisors is an integer number (39649665).

Almost surely, 2^158468489 is an apocalyptic number.

It is an amenable number.

158468489 is a deficient number, since it is larger than the sum of its proper divisors (130171).

158468489 is a wasteful number, since it uses less digits than its factorization.

158468489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130170.

The product of its digits is 2211840, while the sum is 53.

The square root of 158468489 is about 12588.4267881257. The cubic root of 158468489 is about 541.1458168766.

The spelling of 158468489 in words is "one hundred fifty-eight million, four hundred sixty-eight thousand, four hundred eighty-nine".