1189875097 has 4 divisors (see below), whose sum is σ = 1192011876. Its totient is φ = 1187738320.

The previous prime is 1189875079. The next prime is 1189875131. The reversal of 1189875097 is 7905789811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114297481 + 1075577616 = 10691^2 + 32796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189875097 - 2¹¹ = 1189873049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189875047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067554 + ... + 1068667.

It is an arithmetic number, because the mean of its divisors is an integer number (298002969).

Almost surely, 2^1189875097 is an apocalyptic number.

It is an amenable number.

1189875097 is a deficient number, since it is larger than the sum of its proper divisors (2136779).

1189875097 is an equidigital number, since it uses as much as digits as its factorization.

1189875097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136778.

The product of its (nonzero) digits is 1270080, while the sum is 55.

The square root of 1189875097 is about 34494.5661952720. The cubic root of 1189875097 is about 1059.6614253312.

The spelling of 1189875097 in words is "one billion, one hundred eighty-nine million, eight hundred seventy-five thousand, ninety-seven".