194826897664 has 135 divisors (see below), whose sum is σ = 454488475763. Its totient is φ = 83348934144.

The previous prime is 194826897649. The next prime is 194826897689. The reversal of 194826897664 is 466798628491.

The square root of 194826897664 is 441392.

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

It is a junction number, because it is equal to n+sod(n) for n = 194826897593 and 194826897602.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 346051047 + ... + 346051609.

Almost surely, 2^194826897664 is an apocalyptic number.

194826897664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

194826897664 is the 441392-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194826897664

194826897664 is an abundant number, since it is smaller than the sum of its proper divisors (259661578099).

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

194826897664 is an frugal number, since it uses more digits than its factorization.

194826897664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 572 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 70.

The spelling of 194826897664 in words is "one hundred ninety-four billion, eight hundred twenty-six million, eight hundred ninety-seven thousand, six hundred sixty-four".