961807895 has 24 divisors (see below), whose sum is σ = 1235657808. Its totient is φ = 718515200.

The previous prime is 961807871. The next prime is 961807909. The reversal of 961807895 is 598708169.

It is not a de Polignac number, because 961807895 - 2¹⁶ = 961742359 is a prime.

It is a Duffinian number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 186755 + ... + 191835.

It is an arithmetic number, because the mean of its divisors is an integer number (51485742).

Almost surely, 2^961807895 is an apocalyptic number.

961807895 is a deficient number, since it is larger than the sum of its proper divisors (273849913).

961807895 is a wasteful number, since it uses less digits than its factorization.

961807895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251 (or 5234 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 961807895 is about 31013.0278270278. The cubic root of 961807895 is about 987.1036986936.

The spelling of 961807895 in words is "nine hundred sixty-one million, eight hundred seven thousand, eight hundred ninety-five".