16490101 has 2 divisors, whose sum is σ = 16490102. Its totient is φ = 16490100.

The previous prime is 16490059. The next prime is 16490129. The reversal of 16490101 is 10109461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 3709476 = 3575^2 + 1926^2 .

It is a cyclic number.

It is not a de Polignac number, because 16490101 - 2⁹ = 16489589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16490161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8245050 + 8245051.

It is an arithmetic number, because the mean of its divisors is an integer number (8245051).

Almost surely, 2^16490101 is an apocalyptic number.

It is an amenable number.

16490101 is a deficient number, since it is larger than the sum of its proper divisors (1).

16490101 is an equidigital number, since it uses as much as digits as its factorization.

16490101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 16490101 is about 4060.8005368400. The cubic root of 16490101 is about 254.5312470077.

Adding to 16490101 its reverse (10109461), we get a palindrome (26599562).

The spelling of 16490101 in words is "sixteen million, four hundred ninety thousand, one hundred one".