1691230009876 has 192 divisors, whose sum is σ = 3544199898624. Its totient is φ = 697426329600.

The previous prime is 1691230009853. The next prime is 1691230009921. The reversal of 1691230009876 is 6789000321961.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 948529681 + ... + 948531463.

It is an arithmetic number, because the mean of its divisors is an integer number (18459374472).

Almost surely, 2^{1691230009876} is an apocalyptic number.

It is an amenable number.

1691230009876 is an abundant number, since it is smaller than the sum of its proper divisors (1852969888748).

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

1691230009876 is a wasteful number, since it uses less digits than its factorization.

1691230009876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210 (or 2208 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 1691230009876 in words is "one trillion, six hundred ninety-one billion, two hundred thirty million, nine thousand, eight hundred seventy-six".