16159489 has 2 divisors, whose sum is σ = 16159490. Its totient is φ = 16159488.

The previous prime is 16159477. The next prime is 16159511. The reversal of 16159489 is 98495161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 5919489 = 3200^2 + 2433^2 .

It is a cyclic number.

It is not a de Polignac number, because 16159489 - 2⁵ = 16159457 is a prime.

It is a super-2 number, since 2×16159489² = 522258169482242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16159589) 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 as a sum of consecutive naturals, namely, 8079744 + 8079745.

It is an arithmetic number, because the mean of its divisors is an integer number (8079745).

Almost surely, 2^16159489 is an apocalyptic number.

It is an amenable number.

16159489 is a deficient number, since it is larger than the sum of its proper divisors (1).

16159489 is an equidigital number, since it uses as much as digits as its factorization.

16159489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 43.

The square root of 16159489 is about 4019.8866899454. The cubic root of 16159489 is about 252.8187080988.

The spelling of 16159489 in words is "sixteen million, one hundred fifty-nine thousand, four hundred eighty-nine".