16382695649 has 2 divisors, whose sum is σ = 16382695650. Its totient is φ = 16382695648.

The previous prime is 16382695619. The next prime is 16382695687. The reversal of 16382695649 is 94659628361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13486641424 + 2896054225 = 116132^2 + 53815^2 .

It is a cyclic number.

It is not a de Polignac number, because 16382695649 - 2¹² = 16382691553 is a prime.

It is a super-3 number, since 3×16382695649³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16382695619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8191347824 + 8191347825.

It is an arithmetic number, because the mean of its divisors is an integer number (8191347825).

Almost surely, 2^16382695649 is an apocalyptic number.

It is an amenable number.

16382695649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16382695649 is an equidigital number, since it uses as much as digits as its factorization.

16382695649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 59.

The spelling of 16382695649 in words is "sixteen billion, three hundred eighty-two million, six hundred ninety-five thousand, six hundred forty-nine".