193868656 has 40 divisors (see below), whose sum is σ = 393037344. Its totient is φ = 92463360.

The previous prime is 193868621. The next prime is 193868657. The reversal of 193868656 is 656868391.

193868656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193868657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242850 + ... + 243646.

Almost surely, 2^193868656 is an apocalyptic number.

193868656 is a gapful number since it is divisible by the number (16) 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 193868656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196518672).

193868656 is an abundant number, since it is smaller than the sum of its proper divisors (199168688).

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

193868656 is a wasteful number, since it uses less digits than its factorization.

193868656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1483 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The square root of 193868656 is about 13923.6725040486. The cubic root of 193868656 is about 578.7653642049.

The spelling of 193868656 in words is "one hundred ninety-three million, eight hundred sixty-eight thousand, six hundred fifty-six".