193689648 has 60 divisors (see below), whose sum is σ = 570599640. Its totient is φ = 61164288.

The previous prime is 193689631. The next prime is 193689731. The reversal of 193689648 is 846986391.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 193689594 and 193689603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32661 + ... + 38132.

It is an arithmetic number, because the mean of its divisors is an integer number (9509994).

Almost surely, 2^193689648 is an apocalyptic number.

193689648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

193689648 is an abundant number, since it is smaller than the sum of its proper divisors (376909992).

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

193689648 is a wasteful number, since it uses less digits than its factorization.

193689648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70826 (or 70817 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 193689648 is about 13917.2428303885. The cubic root of 193689648 is about 578.5871756378.

The spelling of 193689648 in words is "one hundred ninety-three million, six hundred eighty-nine thousand, six hundred forty-eight".