194894100 has 90 divisors (see below), whose sum is σ = 631795934. Its totient is φ = 51969600.

The previous prime is 194894099. The next prime is 194894131. The reversal of 194894100 is 1498491.

It can be written as a sum of positive squares in 3 ways, for example, as 63011844 + 131882256 = 7938^2 + 11484^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3931 + ... + 20130.

Almost surely, 2^194894100 is an apocalyptic number.

194894100 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 194894100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315897967).

194894100 is an abundant number, since it is smaller than the sum of its proper divisors (436901834).

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

194894100 is a wasteful number, since it uses less digits than its factorization.

194894100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24087 (or 24071 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 194894100 is about 13960.4477005575. The cubic root of 194894100 is about 579.7840059781.

The spelling of 194894100 in words is "one hundred ninety-four million, eight hundred ninety-four thousand, one hundred".