1899810128896 has 99 divisors (see below), whose sum is σ = 4009936295199. Its totient is φ = 899513100288.

The previous prime is 1899810128771. The next prime is 1899810128897. The reversal of 1899810128896 is 6988210189981.

The square root of 1899810128896 is 1378336.

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

It is a super-2 number, since 2×1899810128896² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1899810128897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 838027155 + ... + 838029421.

Almost surely, 2^{1899810128896} is an apocalyptic number.

1899810128896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1899810128896 is the 1378336-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1899810128896

1899810128896 is an abundant number, since it is smaller than the sum of its proper divisors (2110126166303).

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

1899810128896 is an frugal number, since it uses more digits than its factorization.

1899810128896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 70.

The spelling of 1899810128896 in words is "one trillion, eight hundred ninety-nine billion, eight hundred ten million, one hundred twenty-eight thousand, eight hundred ninety-six".