1693878801813 has 80 divisors (see below), whose sum is σ = 2767193721600. Its totient is φ = 1024068873600.

The previous prime is 1693878801773. The next prime is 1693878801833. The reversal of 1693878801813 is 3181088783961.

1693878801813 is a `hidden beast` number, since 169 + 387 + 8 + 80 + 1 + 8 + 13 = 666.

It is not a de Polignac number, because 1693878801813 - 2¹² = 1693878797717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1693878801833) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 1093529763 + ... + 1093531311.

It is an arithmetic number, because the mean of its divisors is an integer number (34589921520).

Almost surely, 2^{1693878801813} is an apocalyptic number.

It is an amenable number.

1693878801813 is a deficient number, since it is larger than the sum of its proper divisors (1073314919787).

1693878801813 is a wasteful number, since it uses less digits than its factorization.

1693878801813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800 (or 3791 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The spelling of 1693878801813 in words is "one trillion, six hundred ninety-three billion, eight hundred seventy-eight million, eight hundred one thousand, eight hundred thirteen".