13849634993 has 2 divisors, whose sum is σ = 13849634994. Its totient is φ = 13849634992.

The previous prime is 13849634977. The next prime is 13849635001. The reversal of 13849634993 is 39943694831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7542575104 + 6307059889 = 86848^2 + 79417^2 .

It is a cyclic number.

It is not a de Polignac number, because 13849634993 - 2⁴ = 13849634977 is a prime.

It is a super-2 number, since 2×13849634993² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13849634963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6924817496 + 6924817497.

It is an arithmetic number, because the mean of its divisors is an integer number (6924817497).

Almost surely, 2^13849634993 is an apocalyptic number.

It is an amenable number.

13849634993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13849634993 is an equidigital number, since it uses as much as digits as its factorization.

13849634993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 59.

The spelling of 13849634993 in words is "thirteen billion, eight hundred forty-nine million, six hundred thirty-four thousand, nine hundred ninety-three".