158920481 has 4 divisors (see below), whose sum is σ = 159026352. Its totient is φ = 158814612.

The previous prime is 158920459. The next prime is 158920499. The reversal of 158920481 is 184029851.

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: 184029851 = 4931 ⋅37321.

It is a cyclic number.

It is not a de Polignac number, because 158920481 - 2⁶ = 158920417 is a prime.

It is a super-2 number, since 2×158920481² = 50511438562542722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158920441) 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, 50651 + ... + 53696.

It is an arithmetic number, because the mean of its divisors is an integer number (39756588).

Almost surely, 2^158920481 is an apocalyptic number.

It is an amenable number.

158920481 is a deficient number, since it is larger than the sum of its proper divisors (105871).

158920481 is a wasteful number, since it uses less digits than its factorization.

158920481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105870.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 158920481 is about 12606.3666851318. The cubic root of 158920481 is about 541.6598231667.

The spelling of 158920481 in words is "one hundred fifty-eight million, nine hundred twenty thousand, four hundred eighty-one".