194633988 has 12 divisors (see below), whose sum is σ = 454146000. Its totient is φ = 64877992.

The previous prime is 194633983. The next prime is 194634001. The reversal of 194633988 is 889336491.

194633988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 194633988.

It is not an unprimeable number, because it can be changed into a prime (194633983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8109738 + ... + 8109761.

It is an arithmetic number, because the mean of its divisors is an integer number (37845500).

Almost surely, 2^194633988 is an apocalyptic number.

It is an amenable number.

194633988 is an abundant number, since it is smaller than the sum of its proper divisors (259512012).

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

194633988 is a wasteful number, since it uses less digits than its factorization.

194633988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16219506 (or 16219504 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 194633988 is about 13951.1285565004. The cubic root of 194633988 is about 579.5259582852.

The spelling of 194633988 in words is "one hundred ninety-four million, six hundred thirty-three thousand, nine hundred eighty-eight".