1898104340 has 96 divisors (see below), whose sum is σ = 4447094400. Its totient is φ = 674693120.

The previous prime is 1898104337. The next prime is 1898104361. The reversal of 1898104340 is 434018981.

It is a junction number, because it is equal to n+sod(n) for n = 1898104294 and 1898104303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3335576 + ... + 3336144.

It is an arithmetic number, because the mean of its divisors is an integer number (46323900).

Almost surely, 2^1898104340 is an apocalyptic number.

1898104340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898104340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2223547200).

1898104340 is an abundant number, since it is smaller than the sum of its proper divisors (2548990060).

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

1898104340 is a wasteful number, since it uses less digits than its factorization.

1898104340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1898104340 is about 43567.2392974354. The cubic root of 1898104340 is about 1238.1502815000.

The spelling of 1898104340 in words is "one billion, eight hundred ninety-eight million, one hundred four thousand, three hundred forty".