1890000199836 has 144 divisors (see below), whose sum is σ = 5893854220800. Its totient is φ = 498710653056.

The previous prime is 1890000199793. The next prime is 1890000199847. The reversal of 1890000199836 is 6389910000981.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 5454106 + ... + 5790273.

It is an arithmetic number, because the mean of its divisors is an integer number (40929543200).

Almost surely, 2^{1890000199836} is an apocalyptic number.

It is an amenable number.

1890000199836 is an abundant number, since it is smaller than the sum of its proper divisors (4003854020964).

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

1890000199836 is a wasteful number, since it uses less digits than its factorization.

1890000199836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11244448 (or 11244443 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The spelling of 1890000199836 in words is "one trillion, eight hundred ninety billion, one hundred ninety-nine thousand, eight hundred thirty-six".