1181839381816 has 96 divisors (see below), whose sum is σ = 2307508590240. Its totient is φ = 567350784000.

The previous prime is 1181839381777. The next prime is 1181839381859. The reversal of 1181839381816 is 6181839381811.

It is a super-2 number, since 2×1181839381816² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 894654436 + ... + 894655756.

It is an arithmetic number, because the mean of its divisors is an integer number (24036547815).

Almost surely, 2^{1181839381816} is an apocalyptic number.

It is an amenable number.

1181839381816 is a deficient number, since it is larger than the sum of its proper divisors (1125669208424).

1181839381816 is a wasteful number, since it uses less digits than its factorization.

1181839381816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2372 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 58.

The spelling of 1181839381816 in words is "one trillion, one hundred eighty-one billion, eight hundred thirty-nine million, three hundred eighty-one thousand, eight hundred sixteen".