16380826169 has 2 divisors, whose sum is σ = 16380826170. Its totient is φ = 16380826168.

The previous prime is 16380826129. The next prime is 16380826207. The reversal of 16380826169 is 96162808361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9528297769 + 6852528400 = 97613^2 + 82780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16380826169 is a prime.

It is a super-2 number, since 2×16380826169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16380826129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190413084 + 8190413085.

It is an arithmetic number, because the mean of its divisors is an integer number (8190413085).

Almost surely, 2^16380826169 is an apocalyptic number.

It is an amenable number.

16380826169 is a deficient number, since it is larger than the sum of its proper divisors (1).

16380826169 is an equidigital number, since it uses as much as digits as its factorization.

16380826169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 16380826169 in words is "sixteen billion, three hundred eighty million, eight hundred twenty-six thousand, one hundred sixty-nine".