1187319294681 has 32 divisors (see below), whose sum is σ = 1721968765440. Its totient is φ = 723331296000.

The previous prime is 1187319294661. The next prime is 1187319294727. The reversal of 1187319294681 is 1864929137811.

It is a de Polignac number, because none of the positive numbers 2^k-1187319294681 is a prime.

It is a super-3 number, since 3×1187319294681³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1187319294661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42956736 + ... + 42984366.

It is an arithmetic number, because the mean of its divisors is an integer number (53811523920).

Almost surely, 2^{1187319294681} is an apocalyptic number.

It is an amenable number.

1187319294681 is a deficient number, since it is larger than the sum of its proper divisors (534649470759).

1187319294681 is a wasteful number, since it uses less digits than its factorization.

1187319294681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38657.

The product of its digits is 5225472, while the sum is 60.

The spelling of 1187319294681 in words is "one trillion, one hundred eighty-seven billion, three hundred nineteen million, two hundred ninety-four thousand, six hundred eighty-one".