11638135739 has 2 divisors, whose sum is σ = 11638135740. Its totient is φ = 11638135738.

The previous prime is 11638135711. The next prime is 11638135777. The reversal of 11638135739 is 93753183611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11638135739 is a prime.

It is a super-2 number, since 2×11638135739² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11638135693 and 11638135702.

It is not a weakly prime, because it can be changed into another prime (11638138739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819067869 + 5819067870.

It is an arithmetic number, because the mean of its divisors is an integer number (5819067870).

Almost surely, 2^11638135739 is an apocalyptic number.

11638135739 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638135739 is an equidigital number, since it uses as much as digits as its factorization.

11638135739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The spelling of 11638135739 in words is "eleven billion, six hundred thirty-eight million, one hundred thirty-five thousand, seven hundred thirty-nine".