13694449631 has 2 divisors, whose sum is σ = 13694449632. Its totient is φ = 13694449630.

The previous prime is 13694449607. The next prime is 13694449667.

It is a happy number.

13694449631 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 13694449631 - 2¹⁸ = 13694187487 is a prime.

It is a super-2 number, since 2×13694449631² (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 13694449631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13694419631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6847224815 + 6847224816.

It is an arithmetic number, because the mean of its divisors is an integer number (6847224816).

Almost surely, 2^13694449631 is an apocalyptic number.

13694449631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13694449631 is an equidigital number, since it uses as much as digits as its factorization.

13694449631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 50.

The spelling of 13694449631 in words is "thirteen billion, six hundred ninety-four million, four hundred forty-nine thousand, six hundred thirty-one".