1154534563 has 64 divisors (see below), whose sum is σ = 1564738560. Its totient is φ = 826495488.

The previous prime is 1154534503. The next prime is 1154534567. The reversal of 1154534563 is 3654354511.

It is not a de Polignac number, because 1154534563 - 2¹³ = 1154526371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154534567) 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 63 ways as a sum of consecutive naturals, for example, 3940245 + ... + 3940537.

It is an arithmetic number, because the mean of its divisors is an integer number (24449040).

Almost surely, 2^1154534563 is an apocalyptic number.

1154534563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1154534563 is a deficient number, since it is larger than the sum of its proper divisors (410203997).

1154534563 is a wasteful number, since it uses less digits than its factorization.

1154534563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its digits is 108000, while the sum is 37.

The square root of 1154534563 is about 33978.4426217565. The cubic root of 1154534563 is about 1049.0647947998.

The spelling of 1154534563 in words is "one billion, one hundred fifty-four million, five hundred thirty-four thousand, five hundred sixty-three".