11438131592 has 8 divisors (see below), whose sum is σ = 21446496750. Its totient is φ = 5719065792.

The previous prime is 11438131591. The next prime is 11438131603. The reversal of 11438131592 is 29513183411.

It can be written as a sum of positive squares in only one way, i.e., 8314886596 + 3123244996 = 91186^2 + 55886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11438131591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714883217 + ... + 714883232.

Almost surely, 2^11438131592 is an apocalyptic number.

It is an amenable number.

11438131592 is a deficient number, since it is larger than the sum of its proper divisors (10008365158).

11438131592 is a wasteful number, since it uses less digits than its factorization.

11438131592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429766455 (or 1429766451 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The spelling of 11438131592 in words is "eleven billion, four hundred thirty-eight million, one hundred thirty-one thousand, five hundred ninety-two".