16129849 has 2 divisors, whose sum is σ = 16129850. Its totient is φ = 16129848.

The previous prime is 16129847. The next prime is 16129873. The reversal of 16129849 is 94892161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 1841449 = 3780^2 + 1357^2 .

It is a cyclic number.

It is not a de Polignac number, because 16129849 - 2¹ = 16129847 is a prime.

Together with 16129847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16129847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8064924 + 8064925.

It is an arithmetic number, because the mean of its divisors is an integer number (8064925).

Almost surely, 2^16129849 is an apocalyptic number.

It is an amenable number.

16129849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16129849 is an equidigital number, since it uses as much as digits as its factorization.

16129849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 16129849 is about 4016.1983267762. The cubic root of 16129849 is about 252.6640387530.

The spelling of 16129849 in words is "sixteen million, one hundred twenty-nine thousand, eight hundred forty-nine".