1321453364 has 72 divisors (see below), whose sum is σ = 2950940160. Its totient is φ = 511996800.

The previous prime is 1321453321. The next prime is 1321453379. The reversal of 1321453364 is 4633541231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321453364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410192 + ... + 413400.

It is an arithmetic number, because the mean of its divisors is an integer number (40985280).

Almost surely, 2^1321453364 is an apocalyptic number.

1321453364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321453364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475470080).

1321453364 is an abundant number, since it is smaller than the sum of its proper divisors (1629486796).

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

1321453364 is a wasteful number, since it uses less digits than its factorization.

1321453364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429 (or 3420 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 1321453364 is about 36351.8000104534. The cubic root of 1321453364 is about 1097.3637598087.

Adding to 1321453364 its reverse (4633541231), we get a palindrome (5954994595).

The spelling of 1321453364 in words is "one billion, three hundred twenty-one million, four hundred fifty-three thousand, three hundred sixty-four".