1138264243408 has 20 divisors (see below), whose sum is σ = 2281434799140. Its totient is φ = 549506875904.

The previous prime is 1138264243357. The next prime is 1138264243469. The reversal of 1138264243408 is 8043424628311.

It can be written as a sum of positive squares in 2 ways, for example, as 978334635664 + 159929607744 = 989108^2 + 399912^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226577385 + ... + 1226578312.

It is an arithmetic number, because the mean of its divisors is an integer number (114071739957).

Almost surely, 2^{1138264243408} is an apocalyptic number.

It is an amenable number.

1138264243408 is an abundant number, since it is smaller than the sum of its proper divisors (1143170555732).

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

1138264243408 is a wasteful number, since it uses less digits than its factorization.

1138264243408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453155734 (or 2453155728 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 1138264243408 in words is "one trillion, one hundred thirty-eight billion, two hundred sixty-four million, two hundred forty-three thousand, four hundred eight".