16636369 has 2 divisors, whose sum is σ = 16636370. Its totient is φ = 16636368.

The previous prime is 16636357. The next prime is 16636409. The reversal of 16636369 is 96363661.

It is an a-pointer prime, because the next prime (16636409) can be obtained adding 16636369 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16096144 + 540225 = 4012^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 16636369 - 2⁷ = 16636241 is a prime.

It is a super-2 number, since 2×16636369² = 553537547008322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16636309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8318184 + 8318185.

It is an arithmetic number, because the mean of its divisors is an integer number (8318185).

Almost surely, 2^16636369 is an apocalyptic number.

It is an amenable number.

16636369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16636369 is an equidigital number, since it uses as much as digits as its factorization.

16636369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 40.

The square root of 16636369 is about 4078.7705255383. The cubic root of 16636369 is about 255.2816009937.

The spelling of 16636369 in words is "sixteen million, six hundred thirty-six thousand, three hundred sixty-nine".