1321440476189 has 8 divisors (see below), whose sum is σ = 1412008713720. Its totient is φ = 1232298510336.

The previous prime is 1321440476183. The next prime is 1321440476267. The reversal of 1321440476189 is 9816740441231.

It can be written as a sum of positive squares in 4 ways, for example, as 192056050564 + 1129384425625 = 438242^2 + 1062725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321440476189 - 2⁴⁰ = 221928848413 is a prime.

It is a super-2 number, since 2×1321440476189² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321440476183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356566004 + ... + 356569709.

It is an arithmetic number, because the mean of its divisors is an integer number (176501089215).

Almost surely, 2^{1321440476189} is an apocalyptic number.

It is an amenable number.

1321440476189 is a deficient number, since it is larger than the sum of its proper divisors (90568237531).

1321440476189 is a wasteful number, since it uses less digits than its factorization.

1321440476189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713135839.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 1321440476189 in words is "one trillion, three hundred twenty-one billion, four hundred forty million, four hundred seventy-six thousand, one hundred eighty-nine".