193628516805 has 12 divisors (see below), whose sum is σ = 335622762540. Its totient is φ = 103268542272.

The previous prime is 193628516779. The next prime is 193628516827. The reversal of 193628516805 is 508615826391.

193628516805 is a `hidden beast` number, since 1 + 9 + 3 + 628 + 5 + 1 + 6 + 8 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45291075489 + 148337441316 = 212817^2 + 385146^2 .

It is not a de Polignac number, because 193628516805 - 2⁷ = 193628516677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2151427920 + ... + 2151428009.

It is an arithmetic number, because the mean of its divisors is an integer number (27968563545).

Almost surely, 2^193628516805 is an apocalyptic number.

193628516805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

193628516805 is a deficient number, since it is larger than the sum of its proper divisors (141994245735).

193628516805 is a wasteful number, since it uses less digits than its factorization.

193628516805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302855940 (or 4302855937 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 193628516805 in words is "one hundred ninety-three billion, six hundred twenty-eight million, five hundred sixteen thousand, eight hundred five".