19847830458 has 16 divisors (see below), whose sum is σ = 39698325216. Its totient is φ = 6615499440.

The previous prime is 19847830403. The next prime is 19847830469. The reversal of 19847830458 is 85403874891.

It is a junction number, because it is equal to n+sod(n) for n = 19847830398 and 19847830407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6616 + ... + 199347.

It is an arithmetic number, because the mean of its divisors is an integer number (2481145326).

Almost surely, 2^19847830458 is an apocalyptic number.

19847830458 is an abundant number, since it is smaller than the sum of its proper divisors (19850494758).

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

19847830458 is a wasteful number, since it uses less digits than its factorization.

19847830458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222029.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 19847830458 in words is "nineteen billion, eight hundred forty-seven million, eight hundred thirty thousand, four hundred fifty-eight".