1336949446381 has 2 divisors, whose sum is σ = 1336949446382. Its totient is φ = 1336949446380.

The previous prime is 1336949446319. The next prime is 1336949446429. The reversal of 1336949446381 is 1836449496331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806915941225 + 530033505156 = 898285^2 + 728034^2 .

It is a cyclic number.

It is not a de Polignac number, because 1336949446381 - 2⁹ = 1336949445869 is a prime.

It is a super-2 number, since 2×1336949446381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1336949446181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668474723190 + 668474723191.

It is an arithmetic number, because the mean of its divisors is an integer number (668474723191).

Almost surely, 2^{1336949446381} is an apocalyptic number.

It is an amenable number.

1336949446381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1336949446381 is an equidigital number, since it uses as much as digits as its factorization.

1336949446381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40310784, while the sum is 61.

The spelling of 1336949446381 in words is "one trillion, three hundred thirty-six billion, nine hundred forty-nine million, four hundred forty-six thousand, three hundred eighty-one".