16501369 has 2 divisors, whose sum is σ = 16501370. Its totient is φ = 16501368.

The previous prime is 16501361. The next prime is 16501399. The reversal of 16501369 is 96310561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15840400 + 660969 = 3980^2 + 813^2 .

It is an emirp because it is prime and its reverse (96310561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16501369 - 2³ = 16501361 is a prime.

It is a super-2 number, since 2×16501369² = 544590357748322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16501369.

It is not a weakly prime, because it can be changed into another prime (16501361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250684 + 8250685.

It is an arithmetic number, because the mean of its divisors is an integer number (8250685).

Almost surely, 2^16501369 is an apocalyptic number.

It is an amenable number.

16501369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16501369 is an equidigital number, since it uses as much as digits as its factorization.

16501369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 16501369 is about 4062.1877110739. The cubic root of 16501369 is about 254.5892091567.

The spelling of 16501369 in words is "sixteen million, five hundred one thousand, three hundred sixty-nine".