1145783569 has 4 divisors (see below), whose sum is σ = 1309466944. Its totient is φ = 982100196.

The previous prime is 1145783567. The next prime is 1145783579. The reversal of 1145783569 is 9653875411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9653875411 = 1871 ⋅5159741.

It is not a de Polignac number, because 1145783569 - 2¹ = 1145783567 is a prime.

It is a super-2 number, since 2×1145783569² = 2625639973980755522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145783563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81841677 + ... + 81841690.

It is an arithmetic number, because the mean of its divisors is an integer number (327366736).

Almost surely, 2^1145783569 is an apocalyptic number.

It is an amenable number.

1145783569 is a deficient number, since it is larger than the sum of its proper divisors (163683375).

1145783569 is an equidigital number, since it uses as much as digits as its factorization.

1145783569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163683374.

The product of its digits is 907200, while the sum is 49.

The square root of 1145783569 is about 33849.4249434167. The cubic root of 1145783569 is about 1046.4075471970.

The spelling of 1145783569 in words is "one billion, one hundred forty-five million, seven hundred eighty-three thousand, five hundred sixty-nine".