1091790289632 has 96 divisors (see below), whose sum is σ = 3275587268352. Its totient is φ = 311919473664.

The previous prime is 1091790289613. The next prime is 1091790289643. The reversal of 1091790289632 is 2369820971901.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12208023 + ... + 12297129.

It is an arithmetic number, because the mean of its divisors is an integer number (34120700712).

Almost surely, 2^{1091790289632} is an apocalyptic number.

1091790289632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1091790289632 is an abundant number, since it is smaller than the sum of its proper divisors (2183796978720).

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

1091790289632 is a wasteful number, since it uses less digits than its factorization.

1091790289632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107360 (or 107352 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 57.

The spelling of 1091790289632 in words is "one trillion, ninety-one billion, seven hundred ninety million, two hundred eighty-nine thousand, six hundred thirty-two".