194331648 has 132 divisors (see below), whose sum is σ = 602997072. Its totient is φ = 55480320.

The previous prime is 194331647. The next prime is 194331649. The reversal of 194331648 is 846133491.

It is an interprime number because it is at equal distance from previous prime (194331647) and next prime (194331649).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (194331647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149883 + ... + 151173.

Almost surely, 2^194331648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194331648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301498536).

194331648 is an abundant number, since it is smaller than the sum of its proper divisors (408665424).

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

194331648 is a wasteful number, since it uses less digits than its factorization.

194331648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1303 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 194331648 is about 13940.2886627214. The cubic root of 194331648 is about 579.2257286374.

The spelling of 194331648 in words is "one hundred ninety-four million, three hundred thirty-one thousand, six hundred forty-eight".