1158759672849 has 27 divisors (see below), whose sum is σ = 1778096488987. Its totient is φ = 727030446144.

The previous prime is 1158759672841. The next prime is 1158759672869. The reversal of 1158759672849 is 9482769578511.

It is a happy number.

The square root of 1158759672849 is 1076457.

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

1158759672849 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 7 + 596 + 7 + 28 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 902148534225 + 256611138624 = 949815^2 + 506568^2 .

It is not a de Polignac number, because 1158759672849 - 2³ = 1158759672841 is a prime.

It is a super-2 number, since 2×1158759672849² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158759672841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 54888754 + ... + 54909860.

Almost surely, 2^{1158759672849} is an apocalyptic number.

1158759672849 is the 1076457-th square number.

1158759672849 is the 538229-th centered octagonal number.

It is an amenable number.

1158759672849 is a deficient number, since it is larger than the sum of its proper divisors (619336816138).

1158759672849 is an frugal number, since it uses more digits than its factorization.

1158759672849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42254 (or 21127 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 72.

The spelling of 1158759672849 in words is "one trillion, one hundred fifty-eight billion, seven hundred fifty-nine million, six hundred seventy-two thousand, eight hundred forty-nine".