19402804284 has 12 divisors (see below), whose sum is σ = 45273210024. Its totient is φ = 6467601424.

The previous prime is 19402804279. The next prime is 19402804297. The reversal of 19402804284 is 48240820491.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 808450167 + ... + 808450190.

It is an arithmetic number, because the mean of its divisors is an integer number (3772767502).

Almost surely, 2^19402804284 is an apocalyptic number.

It is an amenable number.

19402804284 is an abundant number, since it is smaller than the sum of its proper divisors (25870405740).

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

19402804284 is a wasteful number, since it uses less digits than its factorization.

19402804284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616900364 (or 1616900362 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

It can be divided in two parts, 19402 and 804284, that added together give a triangular number (823686 = T₁₂₈₃).

The spelling of 19402804284 in words is "nineteen billion, four hundred two million, eight hundred four thousand, two hundred eighty-four".