1914009243894 has 192 divisors, whose sum is σ = 4956407838720. Its totient is φ = 531747374400.

The previous prime is 1914009243893. The next prime is 1914009243911. The reversal of 1914009243894 is 4983429004191.

1914009243894 is a `hidden beast` number, since 191 + 400 + 9 + 2 + 43 + 8 + 9 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1914009243894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1914009243893) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14043444 + ... + 14179080.

It is an arithmetic number, because the mean of its divisors is an integer number (25814624160).

Almost surely, 2^{1914009243894} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1914009243894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478203919360).

1914009243894 is an abundant number, since it is smaller than the sum of its proper divisors (3042398594826).

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

1914009243894 is a wasteful number, since it uses less digits than its factorization.

1914009243894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135728 (or 135703 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 1914009243894 in words is "one trillion, nine hundred fourteen billion, nine million, two hundred forty-three thousand, eight hundred ninety-four".