1183871097 has 24 divisors (see below), whose sum is σ = 1723158528. Its totient is φ = 783216000.

The previous prime is 1183871063. The next prime is 1183871113. The reversal of 1183871097 is 7901783811.

It is a happy number.

It is not a de Polignac number, because 1183871097 - 2⁶ = 1183871033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1183871027) 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 23 ways as a sum of consecutive naturals, for example, 804072 + ... + 805542.

It is an arithmetic number, because the mean of its divisors is an integer number (71798272).

Almost surely, 2^1183871097 is an apocalyptic number.

It is an amenable number.

1183871097 is a deficient number, since it is larger than the sum of its proper divisors (539287431).

1183871097 is a wasteful number, since it uses less digits than its factorization.

1183871097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The square root of 1183871097 is about 34407.4279335146. The cubic root of 1183871097 is about 1057.8761011545.

The spelling of 1183871097 in words is "one billion, one hundred eighty-three million, eight hundred seventy-one thousand, ninety-seven".