158469133 has 4 divisors (see below), whose sum is σ = 159625980. Its totient is φ = 157312288.

The previous prime is 158469131. The next prime is 158469151. The reversal of 158469133 is 331964851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331964851 = 37 ⋅8972023.

It can be written as a sum of positive squares in 2 ways, for example, as 98049604 + 60419529 = 9902^2 + 7773^2 .

It is a cyclic number.

It is not a de Polignac number, because 158469133 - 2¹ = 158469131 is a prime.

It is a super-2 number, since 2×158469133² = 50224932227543378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158469131) 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, 578218 + ... + 578491.

It is an arithmetic number, because the mean of its divisors is an integer number (39906495).

Almost surely, 2^158469133 is an apocalyptic number.

It is an amenable number.

158469133 is a deficient number, since it is larger than the sum of its proper divisors (1156847).

158469133 is a wasteful number, since it uses less digits than its factorization.

158469133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156846.

The product of its digits is 77760, while the sum is 40.

The square root of 158469133 is about 12588.4523671498. The cubic root of 158469133 is about 541.1465499296.

The spelling of 158469133 in words is "one hundred fifty-eight million, four hundred sixty-nine thousand, one hundred thirty-three".