19198319364 has 81 divisors (see below), whose sum is σ = 56469318087. Its totient is φ = 5483571408.

The previous prime is 19198319353. The next prime is 19198319381. The reversal of 19198319364 is 46391389191.

The square root of 19198319364 is 138558.

It is a perfect power (a square), and thus also a powerful number.

19198319364 is a `hidden beast` number, since 191 + 9 + 83 + 19 + 364 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19198319364.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5817787 + ... + 5821085.

Almost surely, 2^19198319364 is an apocalyptic number.

19198319364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19198319364 is the 138558-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19198319364

19198319364 is an abundant number, since it is smaller than the sum of its proper divisors (37270998723).

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

19198319364 is an equidigital number, since it uses as much as digits as its factorization.

19198319364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622 (or 3311 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The spelling of 19198319364 in words is "nineteen billion, one hundred ninety-eight million, three hundred nineteen thousand, three hundred sixty-four".