169216513 has 2 divisors, whose sum is σ = 169216514. Its totient is φ = 169216512.

The previous prime is 169216477. The next prime is 169216517. The reversal of 169216513 is 315612961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166487409 + 2729104 = 12903^2 + 1652^2 .

It is an emirp because it is prime and its reverse (315612961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169216513 - 2²¹ = 167119361 is a prime.

It is not a weakly prime, because it can be changed into another prime (169216517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84608256 + 84608257.

It is an arithmetic number, because the mean of its divisors is an integer number (84608257).

Almost surely, 2^169216513 is an apocalyptic number.

It is an amenable number.

169216513 is a deficient number, since it is larger than the sum of its proper divisors (1).

169216513 is an equidigital number, since it uses as much as digits as its factorization.

169216513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 169216513 is about 13008.3247576312. The cubic root of 169216513 is about 553.1134854679.

The spelling of 169216513 in words is "one hundred sixty-nine million, two hundred sixteen thousand, five hundred thirteen".