1145541005 has 32 divisors (see below), whose sum is σ = 1670782464. Its totient is φ = 736045056.

The previous prime is 1145540999. The next prime is 1145541029. The reversal of 1145541005 is 5001455411.

It is not a de Polignac number, because 1145541005 - 2¹⁸ = 1145278861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 134504 + ... + 142766.

It is an arithmetic number, because the mean of its divisors is an integer number (52211952).

Almost surely, 2^1145541005 is an apocalyptic number.

It is an amenable number.

1145541005 is a deficient number, since it is larger than the sum of its proper divisors (525241459).

1145541005 is a wasteful number, since it uses less digits than its factorization.

1145541005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1145541005 is about 33845.8417682291. The cubic root of 1145541005 is about 1046.3337000003. Note that the first 3 decimals are identical.

Adding to 1145541005 its reverse (5001455411), we get a palindrome (6146996416).

The spelling of 1145541005 in words is "one billion, one hundred forty-five million, five hundred forty-one thousand, five".