158065489 has 4 divisors (see below), whose sum is σ = 158103040. Its totient is φ = 158027940.

The previous prime is 158065487. The next prime is 158065519. The reversal of 158065489 is 984560851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984560851 = 1619 ⋅608129.

It is a cyclic number.

It is not a de Polignac number, because 158065489 - 2¹ = 158065487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158065483) 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, 11529 + ... + 21190.

It is an arithmetic number, because the mean of its divisors is an integer number (39525760).

Almost surely, 2^158065489 is an apocalyptic number.

It is an amenable number.

158065489 is a deficient number, since it is larger than the sum of its proper divisors (37551).

158065489 is an equidigital number, since it uses as much as digits as its factorization.

158065489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37550.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 158065489 is about 12572.4098326455. The cubic root of 158065489 is about 540.6866995371.

The spelling of 158065489 in words is "one hundred fifty-eight million, sixty-five thousand, four hundred eighty-nine".