999541545 has 16 divisors (see below), whose sum is σ = 1601709120. Its totient is φ = 532274624.

The previous prime is 999541541. The next prime is 999541559. The reversal of 999541545 is 545145999.

It is a cyclic number.

It is not a de Polignac number, because 999541545 - 2² = 999541541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999541541) 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 15 ways as a sum of consecutive naturals, for example, 40674 + ... + 60443.

It is an arithmetic number, because the mean of its divisors is an integer number (100106820).

Almost surely, 2^999541545 is an apocalyptic number.

It is an amenable number.

999541545 is a deficient number, since it is larger than the sum of its proper divisors (602167575).

999541545 is a wasteful number, since it uses less digits than its factorization.

999541545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101784.

The product of its digits is 1458000, while the sum is 51.

The square root of 999541545 is about 31615.5269606565. The cubic root of 999541545 is about 999.8471583073.

The spelling of 999541545 in words is "nine hundred ninety-nine million, five hundred forty-one thousand, five hundred forty-five".