194031648 has 144 divisors (see below), whose sum is σ = 591645600. Its totient is φ = 60134400.

The previous prime is 194031647. The next prime is 194031653. The reversal of 194031648 is 846130491.

194031648 is a `hidden beast` number, since 1 + 9 + 4 + 0 + 3 + 1 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (194031641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322548 + ... + 323148.

It is an arithmetic number, because the mean of its divisors is an integer number (4108650).

Almost surely, 2^194031648 is an apocalyptic number.

194031648 is a gapful number since it is divisible by the number (18) 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 194031648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295822800).

194031648 is an abundant number, since it is smaller than the sum of its proper divisors (397613952).

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

194031648 is a wasteful number, since it uses less digits than its factorization.

194031648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 194031648 is about 13929.5243278441. The cubic root of 194031648 is about 578.9275147073.

The spelling of 194031648 in words is "one hundred ninety-four million, thirty-one thousand, six hundred forty-eight".