1143401453 has 4 divisors (see below), whose sum is σ = 1210660380. Its totient is φ = 1076142528.

The previous prime is 1143401449. The next prime is 1143401471. The reversal of 1143401453 is 3541043411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 420168004 + 723233449 = 20498^2 + 26893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143401453 - 2² = 1143401449 is a prime.

It is a super-2 number, since 2×1143401453² = 2614733765445022418, which 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 (1143401053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33629438 + ... + 33629471.

It is an arithmetic number, because the mean of its divisors is an integer number (302665095).

Almost surely, 2^1143401453 is an apocalyptic number.

It is an amenable number.

1143401453 is a deficient number, since it is larger than the sum of its proper divisors (67258927).

1143401453 is an equidigital number, since it uses as much as digits as its factorization.

1143401453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67258926.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1143401453 is about 33814.2196863982. The cubic root of 1143401453 is about 1045.6818739065.

Adding to 1143401453 its reverse (3541043411), we get a palindrome (4684444864).

The spelling of 1143401453 in words is "one billion, one hundred forty-three million, four hundred one thousand, four hundred fifty-three".