16513139 has 2 divisors, whose sum is σ = 16513140. Its totient is φ = 16513138.

The previous prime is 16513129. The next prime is 16513177. The reversal of 16513139 is 93131561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16513139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16513129) 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, 8256569 + 8256570.

It is an arithmetic number, because the mean of its divisors is an integer number (8256570).

Almost surely, 2^16513139 is an apocalyptic number.

16513139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16513139 is an equidigital number, since it uses as much as digits as its factorization.

16513139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 29.

The square root of 16513139 is about 4063.6361795810. The cubic root of 16513139 is about 254.6497254050.

The spelling of 16513139 in words is "sixteen million, five hundred thirteen thousand, one hundred thirty-nine".