193613868 has 96 divisors (see below), whose sum is σ = 585984000. Its totient is φ = 54131328.

The previous prime is 193613807. The next prime is 193613873. The reversal of 193613868 is 868316391.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32808 + ... + 38256.

It is an arithmetic number, because the mean of its divisors is an integer number (6104000).

Almost surely, 2^193613868 is an apocalyptic number.

193613868 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 193613868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292992000).

193613868 is an abundant number, since it is smaller than the sum of its proper divisors (392370132).

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

193613868 is a wasteful number, since it uses less digits than its factorization.

193613868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516 (or 5508 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 193613868 is about 13914.5200420280. The cubic root of 193613868 is about 578.5117094544.

It can be divided in two parts, 193613 and 868, that added together give a 4-th power (194481 = 21⁴).

The spelling of 193613868 in words is "one hundred ninety-three million, six hundred thirteen thousand, eight hundred sixty-eight".