1894660992 has 192 divisors, whose sum is σ = 6364800000. Its totient is φ = 529708032.

The previous prime is 1894660987. The next prime is 1894660993. The reversal of 1894660992 is 2990664981.

It is a tau number, because it is divible by the number of its divisors (192).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894660993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376509 + ... + 381507.

It is an arithmetic number, because the mean of its divisors is an integer number (33150000).

Almost surely, 2^1894660992 is an apocalyptic number.

1894660992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1894660992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3182400000).

1894660992 is an abundant number, since it is smaller than the sum of its proper divisors (4470139008).

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

1894660992 is a wasteful number, since it uses less digits than its factorization.

1894660992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073 (or 5058 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 1894660992 is about 43527.7037299235. The cubic root of 1894660992 is about 1237.4011194945.

The spelling of 1894660992 in words is "one billion, eight hundred ninety-four million, six hundred sixty thousand, nine hundred ninety-two".