1831386077666 has 32 divisors (see below), whose sum is σ = 2855925172800. Its totient is φ = 880022632896.

The previous prime is 1831386077659. The next prime is 1831386077707. The reversal of 1831386077666 is 6667706831381.

It is a junction number, because it is equal to n+sod(n) for n = 1831386077599 and 1831386077608.

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, 31288820 + ... + 31347296.

It is an arithmetic number, because the mean of its divisors is an integer number (89247661650).

Almost surely, 2^{1831386077666} is an apocalyptic number.

1831386077666 is a deficient number, since it is larger than the sum of its proper divisors (1024539095134).

1831386077666 is a wasteful number, since it uses less digits than its factorization.

1831386077666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63698.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 1831386077666 in words is "one trillion, eight hundred thirty-one billion, three hundred eighty-six million, seventy-seven thousand, six hundred sixty-six".