1898684020 has 12 divisors (see below), whose sum is σ = 3987236484. Its totient is φ = 759473600.

The previous prime is 1898683999. The next prime is 1898684023. The reversal of 1898684020 is 204868981.

It can be written as a sum of positive squares in 2 ways, for example, as 700555024 + 1198128996 = 26468^2 + 34614^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898684023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47467081 + ... + 47467120.

It is an arithmetic number, because the mean of its divisors is an integer number (332269707).

Almost surely, 2^1898684020 is an apocalyptic number.

1898684020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1898684020 is an abundant number, since it is smaller than the sum of its proper divisors (2088552464).

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

1898684020 is a wasteful number, since it uses less digits than its factorization.

1898684020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94934210 (or 94934208 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 1898684020 is about 43573.8914947931. The cubic root of 1898684020 is about 1238.2763121379.

The spelling of 1898684020 in words is "one billion, eight hundred ninety-eight million, six hundred eighty-four thousand, twenty".