13933272181 has 2 divisors, whose sum is σ = 13933272182. Its totient is φ = 13933272180.

The previous prime is 13933272173. The next prime is 13933272211. The reversal of 13933272181 is 18127233931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12359880625 + 1573391556 = 111175^2 + 39666^2 .

It is an emirp because it is prime and its reverse (18127233931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13933272181 - 2³ = 13933272173 is a prime.

It is a super-2 number, since 2×13933272181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13933270181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6966636090 + 6966636091.

It is an arithmetic number, because the mean of its divisors is an integer number (6966636091).

Almost surely, 2^13933272181 is an apocalyptic number.

It is an amenable number.

13933272181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13933272181 is an equidigital number, since it uses as much as digits as its factorization.

13933272181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The spelling of 13933272181 in words is "thirteen billion, nine hundred thirty-three million, two hundred seventy-two thousand, one hundred eighty-one".