1138171384340 has 24 divisors (see below), whose sum is σ = 2435257266120. Its totient is φ = 446678580608.

The previous prime is 1138171384333. The next prime is 1138171384373. The reversal of 1138171384340 is 434831718311.

It can be written as a sum of positive squares in 4 ways, for example, as 18731207044 + 1119440177296 = 136862^2 + 1058036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1138171384291 and 1138171384300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536872235 + ... + 536874354.

It is an arithmetic number, because the mean of its divisors is an integer number (101469052755).

Almost surely, 2^{1138171384340} is an apocalyptic number.

1138171384340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138171384340 is an abundant number, since it is smaller than the sum of its proper divisors (1297085881780).

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

1138171384340 is a wasteful number, since it uses less digits than its factorization.

1138171384340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073746651 (or 1073746649 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 1138171384340 in words is "one trillion, one hundred thirty-eight billion, one hundred seventy-one million, three hundred eighty-four thousand, three hundred forty".