11389371841 has 3 divisors (see below), whose sum is σ = 11389478563. Its totient is φ = 11389265120.

The previous prime is 11389371839. The next prime is 11389371881. The reversal of 11389371841 is 14817398311.

The square root of 11389371841 is 106721.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14817398311 = 19 ⋅779863069.

It can be written as a sum of positive squares in only one way, i.e., 7520531841 + 3868840000 = 86721^2 + 62200^2 .

It is not a de Polignac number, because 11389371841 - 2¹ = 11389371839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11389371791 and 11389371800.

It is not an unprimeable number, because it can be changed into a prime (11389371881) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 53361 + ... + 160081.

Almost surely, 2^11389371841 is an apocalyptic number.

11389371841 is the 106721-st square number.

11389371841 is the 53361-st centered octagonal number.

It is an amenable number.

11389371841 is a deficient number, since it is larger than the sum of its proper divisors (106722).

11389371841 is an frugal number, since it uses more digits than its factorization.

11389371841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213442 (or 106721 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The spelling of 11389371841 in words is "eleven billion, three hundred eighty-nine million, three hundred seventy-one thousand, eight hundred forty-one".