1994221527900 has 288 divisors, whose sum is σ = 7029000115200. Its totient is φ = 426128609280.

The previous prime is 1994221527889. The next prime is 1994221527923. The reversal of 1994221527900 is 97251224991.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5131849 + ... + 5506751.

It is an arithmetic number, because the mean of its divisors is an integer number (24406250400).

Almost surely, 2^{1994221527900} is an apocalyptic number.

1994221527900 is a gapful number since it is divisible by the number (10) 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 1994221527900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3514500057600).

1994221527900 is an abundant number, since it is smaller than the sum of its proper divisors (5034778587300).

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

1994221527900 is a wasteful number, since it uses less digits than its factorization.

1994221527900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375093 (or 375086 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 1994221527900 in words is "one trillion, nine hundred ninety-four billion, two hundred twenty-one million, five hundred twenty-seven thousand, nine hundred".