16489157 has 2 divisors, whose sum is σ = 16489158. Its totient is φ = 16489156.

The previous prime is 16489147. The next prime is 16489163. The reversal of 16489157 is 75198461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14853316 + 1635841 = 3854^2 + 1279^2 .

It is a cyclic number.

It is not a de Polignac number, because 16489157 - 2⁴ = 16489141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16489147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8244578 + 8244579.

It is an arithmetic number, because the mean of its divisors is an integer number (8244579).

Almost surely, 2^16489157 is an apocalyptic number.

It is an amenable number.

16489157 is a deficient number, since it is larger than the sum of its proper divisors (1).

16489157 is an equidigital number, since it uses as much as digits as its factorization.

16489157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 16489157 is about 4060.6843019373. The cubic root of 16489157 is about 254.5263899103.

The spelling of 16489157 in words is "sixteen million, four hundred eighty-nine thousand, one hundred fifty-seven".