1189040871895 has 16 divisors (see below), whose sum is σ = 1449778295808. Its totient is φ = 935978551200.

The previous prime is 1189040871877. The next prime is 1189040871901. The reversal of 1189040871895 is 5981780409811.

It is not a de Polignac number, because 1189040871895 - 2³⁹ = 639285058007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1703631 + ... + 2297920.

It is an arithmetic number, because the mean of its divisors is an integer number (90611143488).

Almost surely, 2^{1189040871895} is an apocalyptic number.

1189040871895 is a deficient number, since it is larger than the sum of its proper divisors (260737423913).

1189040871895 is an equidigital number, since it uses as much as digits as its factorization.

1189040871895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002510.

The product of its (nonzero) digits is 5806080, while the sum is 61.

The spelling of 1189040871895 in words is "one trillion, one hundred eighty-nine billion, forty million, eight hundred seventy-one thousand, eight hundred ninety-five".