19849708432854 has 32 divisors (see below), whose sum is σ = 46432066512000. Its totient is φ = 6268328978472.

The previous prime is 19849708432847. The next prime is 19849708432861. The reversal of 19849708432854 is 45823480794891.

It is a happy number.

19849708432854 is a `hidden beast` number, since 1 + 9 + 8 + 49 + 70 + 8 + 432 + 85 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (19849708432847) and next prime (19849708432861).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9673346164 + ... + 9673348215.

It is an arithmetic number, because the mean of its divisors is an integer number (1451002078500).

Almost surely, 2^{19849708432854} is an apocalyptic number.

19849708432854 is an abundant number, since it is smaller than the sum of its proper divisors (26582358079146).

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

19849708432854 is a wasteful number, since it uses less digits than its factorization.

19849708432854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19346694409 (or 19346694403 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 72.

The spelling of 19849708432854 in words is "nineteen trillion, eight hundred forty-nine billion, seven hundred eight million, four hundred thirty-two thousand, eight hundred fifty-four".