1143153457 has 4 divisors (see below), whose sum is σ = 1210397796. Its totient is φ = 1075909120.

The previous prime is 1143153421. The next prime is 1143153467. The reversal of 1143153457 is 7543513411.

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 880843041 + 262310416 = 29679^2 + 16196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143153457 - 2⁷ = 1143153329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143153467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33622144 + ... + 33622177.

It is an arithmetic number, because the mean of its divisors is an integer number (302599449).

Almost surely, 2^1143153457 is an apocalyptic number.

1143153457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1143153457 is a deficient number, since it is larger than the sum of its proper divisors (67244339).

1143153457 is an equidigital number, since it uses as much as digits as its factorization.

1143153457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67244338.

The product of its digits is 25200, while the sum is 34.

The square root of 1143153457 is about 33810.5524503815. The cubic root of 1143153457 is about 1045.6062680109.

Adding to 1143153457 its reverse (7543513411), we get a palindrome (8686666868).

The spelling of 1143153457 in words is "one billion, one hundred forty-three million, one hundred fifty-three thousand, four hundred fifty-seven".