19209769199694 has 128 divisors (see below), whose sum is σ = 43192880640000. Its totient is φ = 6328112039424.

The previous prime is 19209769199669. The next prime is 19209769199701. The reversal of 19209769199694 is 49699196790291.

It is a super-2 number, since 2×19209769199694² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1407405382 + ... + 1407419030.

It is an arithmetic number, because the mean of its divisors is an integer number (337444380000).

Almost surely, 2^{19209769199694} is an apocalyptic number.

19209769199694 is an abundant number, since it is smaller than the sum of its proper divisors (23983111440306).

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

19209769199694 is a wasteful number, since it uses less digits than its factorization.

19209769199694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14719 (or 14713 counting only the distinct ones).

The product of its (nonzero) digits is 1071385056, while the sum is 81.

The spelling of 19209769199694 in words is "nineteen trillion, two hundred nine billion, seven hundred sixty-nine million, one hundred ninety-nine thousand, six hundred ninety-four".