13819426091 has 2 divisors, whose sum is σ = 13819426092. Its totient is φ = 13819426090.

The previous prime is 13819426081. The next prime is 13819426147. The reversal of 13819426091 is 19062491831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13819426091 is a prime.

It is a super-2 number, since 2×13819426091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13819426081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6909713045 + 6909713046.

It is an arithmetic number, because the mean of its divisors is an integer number (6909713046).

Almost surely, 2^13819426091 is an apocalyptic number.

13819426091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13819426091 is an equidigital number, since it uses as much as digits as its factorization.

13819426091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 13819426091 in words is "thirteen billion, eight hundred nineteen million, four hundred twenty-six thousand, ninety-one".