195493305 has 32 divisors (see below), whose sum is σ = 358216704. Its totient is φ = 89182656.

The previous prime is 195493301. The next prime is 195493327. The reversal of 195493305 is 503394591.

It is not a de Polignac number, because 195493305 - 2² = 195493301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195493301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57462 + ... + 60768.

It is an arithmetic number, because the mean of its divisors is an integer number (11194272).

Almost surely, 2^195493305 is an apocalyptic number.

195493305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195493305 is a deficient number, since it is larger than the sum of its proper divisors (162723399).

195493305 is a wasteful number, since it uses less digits than its factorization.

195493305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 195493305 is about 13981.8920393486. The cubic root of 195493305 is about 580.3775831115.

It can be divided in two parts, 1954 and 93305, that added together give a palindrome (95259).

The spelling of 195493305 in words is "one hundred ninety-five million, four hundred ninety-three thousand, three hundred five".