1091820696378 has 8 divisors (see below), whose sum is σ = 2183641392768. Its totient is φ = 363940232124.

The previous prime is 1091820696367. The next prime is 1091820696391. The reversal of 1091820696378 is 8736960281901.

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

1091820696378 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90985058026 + ... + 90985058037.

It is an arithmetic number, because the mean of its divisors is an integer number (272955174096).

Almost surely, 2^{1091820696378} is an apocalyptic number.

1091820696378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1091820696378 is a wasteful number, since it uses less digits than its factorization.

1091820696378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181970116068.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 1091820696378 in words is "one trillion, ninety-one billion, eight hundred twenty million, six hundred ninety-six thousand, three hundred seventy-eight".