13690456919 has 4 divisors (see below), whose sum is σ = 13692886944. Its totient is φ = 13688026896.

The previous prime is 13690456891. The next prime is 13690456939. The reversal of 13690456919 is 91965409631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91965409631 = 4889 ⋅18810679.

It is a cyclic number.

It is not a de Polignac number, because 13690456919 - 2¹² = 13690452823 is a prime.

It is a super-2 number, since 2×13690456919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13690456939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206542 + ... + 1217835.

It is an arithmetic number, because the mean of its divisors is an integer number (3423221736).

Almost surely, 2^13690456919 is an apocalyptic number.

13690456919 is a deficient number, since it is larger than the sum of its proper divisors (2430025).

13690456919 is an equidigital number, since it uses as much as digits as its factorization.

13690456919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430024.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The spelling of 13690456919 in words is "thirteen billion, six hundred ninety million, four hundred fifty-six thousand, nine hundred nineteen".