1138863936349 has 8 divisors (see below), whose sum is σ = 1144015774200. Its totient is φ = 1133714355456.

The previous prime is 1138863936317. The next prime is 1138863936359. The reversal of 1138863936349 is 9436393688311.

It can be written as a sum of positive squares in 4 ways, for example, as 173593056025 + 965270880324 = 416645^2 + 982482^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1138863936349 - 2⁵ = 1138863936317 is a prime.

It is a super-2 number, since 2×1138863936349² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138863936359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451369 + ... + 1575265.

It is an arithmetic number, because the mean of its divisors is an integer number (143001971775).

Almost surely, 2^{1138863936349} is an apocalyptic number.

It is an amenable number.

1138863936349 is a deficient number, since it is larger than the sum of its proper divisors (5151837851).

1138863936349 is a wasteful number, since it uses less digits than its factorization.

1138863936349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128479.

The product of its digits is 60466176, while the sum is 64.

The spelling of 1138863936349 in words is "one trillion, one hundred thirty-eight billion, eight hundred sixty-three million, nine hundred thirty-six thousand, three hundred forty-nine".