13461969149 has 2 divisors, whose sum is σ = 13461969150. Its totient is φ = 13461969148.

The previous prime is 13461969133. The next prime is 13461969179. The reversal of 13461969149 is 94196916431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13252153924 + 209815225 = 115118^2 + 14485^2 .

It is a cyclic number.

It is not a de Polignac number, because 13461969149 - 2⁴ = 13461969133 is a prime.

It is a super-2 number, since 2×13461969149² (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 13461969149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13461969109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6730984574 + 6730984575.

It is an arithmetic number, because the mean of its divisors is an integer number (6730984575).

Almost surely, 2^13461969149 is an apocalyptic number.

It is an amenable number.

13461969149 is a deficient number, since it is larger than the sum of its proper divisors (1).

13461969149 is an equidigital number, since it uses as much as digits as its factorization.

13461969149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 53.

The spelling of 13461969149 in words is "thirteen billion, four hundred sixty-one million, nine hundred sixty-nine thousand, one hundred forty-nine".