1189875081 has 8 divisors (see below), whose sum is σ = 1593084064. Its totient is φ = 789958080.

The previous prime is 1189875079. The next prime is 1189875131. The reversal of 1189875081 is 1805789811.

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

It is not a de Polignac number, because 1189875081 - 2¹ = 1189875079 is a prime.

It is a super-2 number, since 2×1189875081² = 2831605416769513122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1189875081.

It is not an unprimeable number, because it can be changed into a prime (1189875881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822151 + ... + 823596.

It is an arithmetic number, because the mean of its divisors is an integer number (199135508).

Almost surely, 2^1189875081 is an apocalyptic number.

It is an amenable number.

1189875081 is a deficient number, since it is larger than the sum of its proper divisors (403208983).

1189875081 is a wasteful number, since it uses less digits than its factorization.

1189875081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645991.

The product of its (nonzero) digits is 161280, while the sum is 48.

The square root of 1189875081 is about 34494.5659633514. The cubic root of 1189875081 is about 1059.6614205815.

The spelling of 1189875081 in words is "one billion, one hundred eighty-nine million, eight hundred seventy-five thousand, eighty-one".