1173271109 has 16 divisors (see below), whose sum is σ = 1258420800. Its totient is φ = 1090537344.

The previous prime is 1173271097. The next prime is 1173271117. The reversal of 1173271109 is 9011723711.

It is a cyclic number.

It is not a de Polignac number, because 1173271109 - 2¹⁶ = 1173205573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173271139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049819 + ... + 1050935.

It is an arithmetic number, because the mean of its divisors is an integer number (78651300).

Almost surely, 2^1173271109 is an apocalyptic number.

1173271109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1173271109 is a deficient number, since it is larger than the sum of its proper divisors (85149691).

1173271109 is a wasteful number, since it uses less digits than its factorization.

1173271109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 1173271109 is about 34253.0452514809. The cubic root of 1173271109 is about 1054.7093406516.

The spelling of 1173271109 in words is "one billion, one hundred seventy-three million, two hundred seventy-one thousand, one hundred nine".