1143073453 has 4 divisors (see below), whose sum is σ = 1149680988. Its totient is φ = 1136465920.

The previous prime is 1143073441. The next prime is 1143073469. The reversal of 1143073453 is 3543703411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3543703411 = 191 ⋅18553421.

It can be written as a sum of positive squares in 2 ways, for example, as 804403044 + 338670409 = 28362^2 + 18403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143073453 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 (1143073553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3303508 + ... + 3303853.

It is an arithmetic number, because the mean of its divisors is an integer number (287420247).

Almost surely, 2^1143073453 is an apocalyptic number.

It is an amenable number.

1143073453 is a deficient number, since it is larger than the sum of its proper divisors (6607535).

1143073453 is an equidigital number, since it uses as much as digits as its factorization.

1143073453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6607534.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 1143073453 is about 33809.3693079300. The cubic root of 1143073453 is about 1045.5818750667.

Adding to 1143073453 its reverse (3543703411), we get a palindrome (4686776864).

The spelling of 1143073453 in words is "one billion, one hundred forty-three million, seventy-three thousand, four hundred fifty-three".