1898949239900 has 36 divisors (see below), whose sum is σ = 4120996005000. Its totient is φ = 759528792000.

The previous prime is 1898949239843. The next prime is 1898949239963. The reversal of 1898949239900 is 99329498981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881351 + ... + 2138849.

It is an arithmetic number, because the mean of its divisors is an integer number (114472111250).

Almost surely, 2^{1898949239900} is an apocalyptic number.

1898949239900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1898949239900 is an abundant number, since it is smaller than the sum of its proper divisors (2222046765100).

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

1898949239900 is a wasteful number, since it uses less digits than its factorization.

1898949239900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272614 (or 1272607 counting only the distinct ones).

The product of its (nonzero) digits is 90699264, while the sum is 71.

The spelling of 1898949239900 in words is "one trillion, eight hundred ninety-eight billion, nine hundred forty-nine million, two hundred thirty-nine thousand, nine hundred".