13902163897 has 2 divisors, whose sum is σ = 13902163898. Its totient is φ = 13902163896.

The previous prime is 13902163889. The next prime is 13902163949. The reversal of 13902163897 is 79836120931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12820806441 + 1081357456 = 113229^2 + 32884^2 .

It is a cyclic number.

It is not a de Polignac number, because 13902163897 - 2³ = 13902163889 is a prime.

It is a super-2 number, since 2×13902163897² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13902163897.

It is not a weakly prime, because it can be changed into another prime (13902133897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6951081948 + 6951081949.

It is an arithmetic number, because the mean of its divisors is an integer number (6951081949).

Almost surely, 2^13902163897 is an apocalyptic number.

It is an amenable number.

13902163897 is a deficient number, since it is larger than the sum of its proper divisors (1).

13902163897 is an equidigital number, since it uses as much as digits as its factorization.

13902163897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 13902163897 in words is "thirteen billion, nine hundred two million, one hundred sixty-three thousand, eight hundred ninety-seven".