1186858681671 has 32 divisors (see below), whose sum is σ = 1779036295680. Its totient is φ = 698331199104.

The previous prime is 1186858681667. The next prime is 1186858681681. The reversal of 1186858681671 is 1761868586811.

It is not a de Polignac number, because 1186858681671 - 2² = 1186858681667 is a prime.

It is a super-2 number, since 2×1186858681671² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1186858681601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1914520 + ... + 2457458.

It is an arithmetic number, because the mean of its divisors is an integer number (55594884240).

Almost surely, 2^{1186858681671} is an apocalyptic number.

1186858681671 is a deficient number, since it is larger than the sum of its proper divisors (592177614009).

1186858681671 is a wasteful number, since it uses less digits than its factorization.

1186858681671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545415.

The product of its digits is 30965760, while the sum is 66.

The spelling of 1186858681671 in words is "one trillion, one hundred eighty-six billion, eight hundred fifty-eight million, six hundred eighty-one thousand, six hundred seventy-one".