16513129 has 2 divisors, whose sum is σ = 16513130. Its totient is φ = 16513128.

The previous prime is 16513117. The next prime is 16513139. The reversal of 16513129 is 92131561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9753129 + 6760000 = 3123^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 16513129 - 2¹¹ = 16511081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16513097 and 16513106.

It is not a weakly prime, because it can be changed into another prime (16513139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256564 + 8256565.

It is an arithmetic number, because the mean of its divisors is an integer number (8256565).

Almost surely, 2^16513129 is an apocalyptic number.

It is an amenable number.

16513129 is a deficient number, since it is larger than the sum of its proper divisors (1).

16513129 is an equidigital number, since it uses as much as digits as its factorization.

16513129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 16513129 is about 4063.6349491557. The cubic root of 16513129 is about 254.6496740015.

The spelling of 16513129 in words is "sixteen million, five hundred thirteen thousand, one hundred twenty-nine".