1138992409717 has 16 divisors (see below), whose sum is σ = 1180515796992. Its totient is φ = 1098056917440.

The previous prime is 1138992409669. The next prime is 1138992409733. The reversal of 1138992409717 is 7179042998311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138992409717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138992409117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3475542 + ... + 3789112.

It is an arithmetic number, because the mean of its divisors is an integer number (73782237312).

Almost surely, 2^{1138992409717} is an apocalyptic number.

It is an amenable number.

1138992409717 is a deficient number, since it is larger than the sum of its proper divisors (41523387275).

1138992409717 is a wasteful number, since it uses less digits than its factorization.

1138992409717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314508.

The product of its (nonzero) digits is 6858432, while the sum is 61.

The spelling of 1138992409717 in words is "one trillion, one hundred thirty-eight billion, nine hundred ninety-two million, four hundred nine thousand, seven hundred seventeen".