1091946646582 has 16 divisors (see below), whose sum is σ = 1786913209872. Its totient is φ = 496313989120.

The previous prime is 1091946646541. The next prime is 1091946646591. The reversal of 1091946646582 is 2856466491901.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091946646582.

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 7 ways as a sum of consecutive naturals, for example, 826603 + ... + 1693270.

It is an arithmetic number, because the mean of its divisors is an integer number (111682075617).

Almost surely, 2^{1091946646582} is an apocalyptic number.

1091946646582 is a deficient number, since it is larger than the sum of its proper divisors (694966563290).

1091946646582 is a wasteful number, since it uses less digits than its factorization.

1091946646582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539583.

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 1091946646582 in words is "one trillion, ninety-one billion, nine hundred forty-six million, six hundred forty-six thousand, five hundred eighty-two".