1172871265 has 8 divisors (see below), whose sum is σ = 1407685248. Its totient is φ = 938137200.

The previous prime is 1172871263. The next prime is 1172871277. The reversal of 1172871265 is 5621782711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1172871265 - 2¹ = 1172871263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172871263) 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 7 ways as a sum of consecutive naturals, for example, 19354 + ... + 52156.

It is an arithmetic number, because the mean of its divisors is an integer number (175960656).

Almost surely, 2^1172871265 is an apocalyptic number.

It is an amenable number.

1172871265 is a deficient number, since it is larger than the sum of its proper divisors (234813983).

1172871265 is an equidigital number, since it uses as much as digits as its factorization.

1172871265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39959.

The product of its digits is 47040, while the sum is 40.

The square root of 1172871265 is about 34247.2081343867. The cubic root of 1172871265 is about 1054.5895140932.

The spelling of 1172871265 in words is "one billion, one hundred seventy-two million, eight hundred seventy-one thousand, two hundred sixty-five".