1994211897054 has 64 divisors (see below), whose sum is σ = 4434962208768. Its totient is φ = 593651836800.

The previous prime is 1994211897053. The next prime is 1994211897059. The reversal of 1994211897054 is 4507981124991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994211897053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9131257 + ... + 9347099.

It is an arithmetic number, because the mean of its divisors is an integer number (69296284512).

Almost surely, 2^{1994211897054} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1994211897054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2217481104384).

1994211897054 is an abundant number, since it is smaller than the sum of its proper divisors (2440750311714).

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

1994211897054 is a wasteful number, since it uses less digits than its factorization.

1994211897054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219713.

The product of its (nonzero) digits is 6531840, while the sum is 60.

The spelling of 1994211897054 in words is "one trillion, nine hundred ninety-four billion, two hundred eleven million, eight hundred ninety-seven thousand, fifty-four".