1138686073940 has 12 divisors (see below), whose sum is σ = 2391240755316. Its totient is φ = 455474429568.

The previous prime is 1138686073873. The next prime is 1138686073969. The reversal of 1138686073940 is 493706868311.

It can be written as a sum of positive squares in 2 ways, for example, as 719616283204 + 419069790736 = 848302^2 + 647356^2 .

It is a super-2 number, since 2×1138686073940² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28467151829 + ... + 28467151868.

It is an arithmetic number, because the mean of its divisors is an integer number (199270062943).

Almost surely, 2^{1138686073940} is an apocalyptic number.

1138686073940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138686073940 is an abundant number, since it is smaller than the sum of its proper divisors (1252554681376).

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

1138686073940 is a wasteful number, since it uses less digits than its factorization.

1138686073940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56934303706 (or 56934303704 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 1138686073940 in words is "one trillion, one hundred thirty-eight billion, six hundred eighty-six million, seventy-three thousand, nine hundred forty".