1820042364384 has 72 divisors (see below), whose sum is σ = 5480201104560. Its totient is φ = 570993681408.

The previous prime is 1820042364373. The next prime is 1820042364433. The reversal of 1820042364384 is 4834632400281.

It is a happy number.

1820042364384 is a `hidden beast` number, since 1 + 8 + 200 + 4 + 2 + 3 + 6 + 438 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185865444 + ... + 185875235.

It is an arithmetic number, because the mean of its divisors is an integer number (76113904230).

Almost surely, 2^{1820042364384} is an apocalyptic number.

It is an amenable number.

1820042364384 is an abundant number, since it is smaller than the sum of its proper divisors (3660158740176).

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

1820042364384 is a wasteful number, since it uses less digits than its factorization.

1820042364384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371740712 (or 371740701 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 1820042364384 in words is "one trillion, eight hundred twenty billion, forty-two million, three hundred sixty-four thousand, three hundred eighty-four".