11386881634 has 8 divisors (see below), whose sum is σ = 17117374428. Its totient is φ = 5681090160.

The previous prime is 11386881617. The next prime is 11386881637. The reversal of 11386881634 is 43618868311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10151570025 + 1235311609 = 100755^2 + 35147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11386881634² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11386881637) 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, 6174177 + ... + 6176020.

Almost surely, 2^11386881634 is an apocalyptic number.

11386881634 is a deficient number, since it is larger than the sum of its proper divisors (5730492794).

11386881634 is a wasteful number, since it uses less digits than its factorization.

11386881634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12350660.

The product of its digits is 663552, while the sum is 49.

The spelling of 11386881634 in words is "eleven billion, three hundred eighty-six million, eight hundred eighty-one thousand, six hundred thirty-four".