1138539678246 has 24 divisors (see below), whose sum is σ = 2467866917880. Its totient is φ = 379354618656.

The previous prime is 1138539678217. The next prime is 1138539678251. The reversal of 1138539678246 is 6428769358311.

1138539678246 is a `hidden beast` number, since 1 + 1 + 3 + 8 + 539 + 6 + 78 + 24 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13173016 + ... + 13259163.

It is an arithmetic number, because the mean of its divisors is an integer number (102827788245).

Almost surely, 2^{1138539678246} is an apocalyptic number.

1138539678246 is an abundant number, since it is smaller than the sum of its proper divisors (1329327239634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138539678246 is a wasteful number, since it uses less digits than its factorization.

1138539678246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26434580 (or 26434577 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 1138539678246 in words is "one trillion, one hundred thirty-eight billion, five hundred thirty-nine million, six hundred seventy-eight thousand, two hundred forty-six".