13071893749 has 2 divisors, whose sum is σ = 13071893750. Its totient is φ = 13071893748.

The previous prime is 13071893699. The next prime is 13071893773. The reversal of 13071893749 is 94739817031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11595413124 + 1476480625 = 107682^2 + 38425^2 .

It is an emirp because it is prime and its reverse (94739817031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13071893749 - 2¹⁹ = 13071369461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13071893696 and 13071893705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13071899749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6535946874 + 6535946875.

It is an arithmetic number, because the mean of its divisors is an integer number (6535946875).

Almost surely, 2^13071893749 is an apocalyptic number.

It is an amenable number.

13071893749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13071893749 is an equidigital number, since it uses as much as digits as its factorization.

13071893749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 13071893749 in words is "thirteen billion, seventy-one million, eight hundred ninety-three thousand, seven hundred forty-nine".