159490491 has 16 divisors (see below), whose sum is σ = 214900224. Its totient is φ = 105210144.

The previous prime is 159490489. The next prime is 159490519. The reversal of 159490491 is 194094951.

It is a happy number.

It is not a de Polignac number, because 159490491 - 2¹ = 159490489 is a prime.

It is a super-3 number, since 3×159490491³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (159490421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144046 + ... + 145148.

It is an arithmetic number, because the mean of its divisors is an integer number (13431264).

Almost surely, 2^159490491 is an apocalyptic number.

159490491 is a deficient number, since it is larger than the sum of its proper divisors (55409733).

159490491 is a wasteful number, since it uses less digits than its factorization.

159490491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 159490491 is about 12628.9544697889. The cubic root of 159490491 is about 542.3066521305.

The spelling of 159490491 in words is "one hundred fifty-nine million, four hundred ninety thousand, four hundred ninety-one".