1187233861885 has 8 divisors (see below), whose sum is σ = 1424878907616. Its totient is φ = 949654907280.

The previous prime is 1187233861871. The next prime is 1187233861967. The reversal of 1187233861885 is 5881683327811.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1187233861885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16483251 + ... + 16555120.

It is an arithmetic number, because the mean of its divisors is an integer number (178109863452).

Almost surely, 2^{1187233861885} is an apocalyptic number.

It is an amenable number.

1187233861885 is a deficient number, since it is larger than the sum of its proper divisors (237645045731).

1187233861885 is an equidigital number, since it uses as much as digits as its factorization.

1187233861885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33045563.

The product of its digits is 15482880, while the sum is 61.

The spelling of 1187233861885 in words is "one trillion, one hundred eighty-seven billion, two hundred thirty-three million, eight hundred sixty-one thousand, eight hundred eighty-five".