1320005453 has 16 divisors (see below), whose sum is σ = 1434921600. Its totient is φ = 1207047744.

The previous prime is 1320005431. The next prime is 1320005471. The reversal of 1320005453 is 3545000231.

It is a cyclic number.

It is not a de Polignac number, because 1320005453 - 2¹⁰ = 1320004429 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 (1320005473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1012400 + ... + 1013702.

It is an arithmetic number, because the mean of its divisors is an integer number (89682600).

Almost surely, 2^1320005453 is an apocalyptic number.

1320005453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1320005453 is a deficient number, since it is larger than the sum of its proper divisors (114916147).

1320005453 is a wasteful number, since it uses less digits than its factorization.

1320005453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 1320005453 is about 36331.8792935350. The cubic root of 1320005453 is about 1096.9628210223.

Adding to 1320005453 its reverse (3545000231), we get a palindrome (4865005684).

The spelling of 1320005453 in words is "one billion, three hundred twenty million, five thousand, four hundred fifty-three".