194635980 has 384 divisors, whose sum is σ = 784465920. Its totient is φ = 38880000.

The previous prime is 194635957. The next prime is 194635993. The reversal of 194635980 is 89536491.

It is a happy number.

194635980 is a `hidden beast` number, since 1 + 9 + 4 + 635 + 9 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1288905 + ... + 1289055.

It is an arithmetic number, because the mean of its divisors is an integer number (2042880).

Almost surely, 2^194635980 is an apocalyptic number.

194635980 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 194635980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392232960).

194635980 is an abundant number, since it is smaller than the sum of its proper divisors (589829940).

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

194635980 is a wasteful number, since it uses less digits than its factorization.

194635980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 194635980 is about 13951.1999483915. The cubic root of 194635980 is about 579.5279353496.

The spelling of 194635980 in words is "one hundred ninety-four million, six hundred thirty-five thousand, nine hundred eighty".