1189085101 has 16 divisors (see below), whose sum is σ = 1242319104. Its totient is φ = 1137314304.

The previous prime is 1189085099. The next prime is 1189085129. The reversal of 1189085101 is 1015809811.

It is not a de Polignac number, because 1189085101 - 2¹ = 1189085099 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 (1189085201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386170 + ... + 389236.

It is an arithmetic number, because the mean of its divisors is an integer number (77644944).

Almost surely, 2^1189085101 is an apocalyptic number.

It is an amenable number.

1189085101 is a deficient number, since it is larger than the sum of its proper divisors (53234003).

1189085101 is a wasteful number, since it uses less digits than its factorization.

1189085101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300.

The product of its (nonzero) digits is 2880, while the sum is 34.

The square root of 1189085101 is about 34483.1132730210. The cubic root of 1189085101 is about 1059.4268590805.

The spelling of 1189085101 in words is "one billion, one hundred eighty-nine million, eighty-five thousand, one hundred one".