1153545243 has 16 divisors (see below), whose sum is σ = 1621487616. Its totient is φ = 728006400.

The previous prime is 1153545223. The next prime is 1153545269. The reversal of 1153545243 is 3425453511.

It is not a de Polignac number, because 1153545243 - 2⁹ = 1153544731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1153545223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79483 + ... + 92868.

It is an arithmetic number, because the mean of its divisors is an integer number (101342976).

Almost surely, 2^1153545243 is an apocalyptic number.

1153545243 is a deficient number, since it is larger than the sum of its proper divisors (467942373).

1153545243 is a wasteful number, since it uses less digits than its factorization.

1153545243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172474.

The product of its digits is 36000, while the sum is 33.

The square root of 1153545243 is about 33963.8814477969. The cubic root of 1153545243 is about 1048.7650614975.

Adding to 1153545243 its reverse (3425453511), we get a palindrome (4578998754).

The spelling of 1153545243 in words is "one billion, one hundred fifty-three million, five hundred forty-five thousand, two hundred forty-three".