195770745 has 48 divisors (see below), whose sum is σ = 349420032. Its totient is φ = 101347200.

The previous prime is 195770693. The next prime is 195770747. The reversal of 195770745 is 547077591.

195770745 is a `hidden beast` number, since 1 + 9 + 577 + 0 + 74 + 5 = 666.

It is not a de Polignac number, because 195770745 - 2⁸ = 195770489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 195770745.

It is not an unprimeable number, because it can be changed into a prime (195770747) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 319059 + ... + 319671.

It is an arithmetic number, because the mean of its divisors is an integer number (7279584).

Almost surely, 2^195770745 is an apocalyptic number.

195770745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195770745 is a deficient number, since it is larger than the sum of its proper divisors (153649287).

195770745 is a wasteful number, since it uses less digits than its factorization.

195770745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The square root of 195770745 is about 13991.8099258102. The cubic root of 195770745 is about 580.6520065666.

The spelling of 195770745 in words is "one hundred ninety-five million, seven hundred seventy thousand, seven hundred forty-five".