1145297945 has 16 divisors (see below), whose sum is σ = 1547665920. Its totient is φ = 806073600.

The previous prime is 1145297893. The next prime is 1145297969. The reversal of 1145297945 is 5497925411.

It is not a de Polignac number, because 1145297945 - 2¹⁰ = 1145296921 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145297945.

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 15 ways as a sum of consecutive naturals, for example, 334160 + ... + 337569.

It is an arithmetic number, because the mean of its divisors is an integer number (96729120).

Almost surely, 2^1145297945 is an apocalyptic number.

It is an amenable number.

1145297945 is a deficient number, since it is larger than the sum of its proper divisors (402367975).

1145297945 is a wasteful number, since it uses less digits than its factorization.

1145297945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671776.

The product of its digits is 453600, while the sum is 47.

The square root of 1145297945 is about 33842.2508855425. The cubic root of 1145297945 is about 1046.2596913420.

The spelling of 1145297945 in words is "one billion, one hundred forty-five million, two hundred ninety-seven thousand, nine hundred forty-five".