1155943045 has 16 divisors (see below), whose sum is σ = 1459296000. Its totient is φ = 877726528.

The previous prime is 1155943037. The next prime is 1155943049. The reversal of 1155943045 is 5403495511.

It is not a de Polignac number, because 1155943045 - 2³ = 1155943037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155942995 and 1155943013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155943049) 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, 59005 + ... + 76114.

It is an arithmetic number, because the mean of its divisors is an integer number (91206000).

Almost surely, 2^1155943045 is an apocalyptic number.

It is an amenable number.

1155943045 is a deficient number, since it is larger than the sum of its proper divisors (303352955).

1155943045 is a wasteful number, since it uses less digits than its factorization.

1155943045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135212.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 1155943045 is about 33999.1624161537. The cubic root of 1155943045 is about 1049.4912259262.

The spelling of 1155943045 in words is "one billion, one hundred fifty-five million, nine hundred forty-three thousand, forty-five".