1145878188849 has 9 divisors (see below), whose sum is σ = 1655162022553. Its totient is φ = 763916651652.

The previous prime is 1145878188841. The next prime is 1145878188907. The reversal of 1145878188849 is 9488818785411.

The square root of 1145878188849 is 1070457.

It is a perfect power (a square), and thus also a powerful number.

1145878188849 is a `hidden beast` number, since 11 + 458 + 7 + 8 + 1 + 88 + 84 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1145878188849 - 2³ = 1145878188841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145878188841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3032962 + ... + 3389780.

Almost surely, 2^{1145878188849} is an apocalyptic number.

1145878188849 is the 1070457-th square number.

1145878188849 is the 535229-th centered octagonal number.

It is an amenable number.

1145878188849 is a deficient number, since it is larger than the sum of its proper divisors (509283833704).

1145878188849 is an frugal number, since it uses more digits than its factorization.

1145878188849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713644 (or 356822 counting only the distinct ones).

The product of its digits is 165150720, while the sum is 72.

The spelling of 1145878188849 in words is "one trillion, one hundred forty-five billion, eight hundred seventy-eight million, one hundred eighty-eight thousand, eight hundred forty-nine".