1081954779178 has 16 divisors (see below), whose sum is σ = 1997454977280. Its totient is φ = 428026066416.

The previous prime is 1081954779137. The next prime is 1081954779187. The reversal of 1081954779178 is 8719774591801.

It is a super-3 number, since 3×1081954779178³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 2972403058 + ... + 2972403421.

It is an arithmetic number, because the mean of its divisors is an integer number (124840936080).

Almost surely, 2^{1081954779178} is an apocalyptic number.

1081954779178 is a deficient number, since it is larger than the sum of its proper divisors (915500198102).

1081954779178 is a wasteful number, since it uses less digits than its factorization.

1081954779178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944806501.

The product of its (nonzero) digits is 35562240, while the sum is 67.

The spelling of 1081954779178 in words is "one trillion, eighty-one billion, nine hundred fifty-four million, seven hundred seventy-nine thousand, one hundred seventy-eight".