19393689081604 has 12 divisors (see below), whose sum is σ = 33979994539344. Its totient is φ = 9685119213224.

The previous prime is 19393689081541. The next prime is 19393689081619. The reversal of 19393689081604 is 40618098639391.

It is a super-2 number, since 2×19393689081604² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19393689081604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2931328174 + ... + 2931334789.

It is an arithmetic number, because the mean of its divisors is an integer number (2831666211612).

Almost surely, 2^{19393689081604} is an apocalyptic number.

It is an amenable number.

19393689081604 is a deficient number, since it is larger than the sum of its proper divisors (14586305457740).

19393689081604 is a wasteful number, since it uses less digits than its factorization.

19393689081604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862663794 (or 5862663792 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 67.

The spelling of 19393689081604 in words is "nineteen trillion, three hundred ninety-three billion, six hundred eighty-nine million, eighty-one thousand, six hundred four".