965871901 has 4 divisors (see below), whose sum is σ = 967190332. Its totient is φ = 964553472.

The previous prime is 965871889. The next prime is 965871931. The reversal of 965871901 is 109178569.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109178569 = 53 ⋅2059973.

It can be written as a sum of positive squares in 2 ways, for example, as 882149401 + 83722500 = 29701^2 + 9150^2 .

It is a cyclic number.

It is not a de Polignac number, because 965871901 - 2⁵ = 965871869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965871931) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 658116 + ... + 659581.

It is an arithmetic number, because the mean of its divisors is an integer number (241797583).

Almost surely, 2^965871901 is an apocalyptic number.

It is an amenable number.

965871901 is a deficient number, since it is larger than the sum of its proper divisors (1318431).

965871901 is a wasteful number, since it uses less digits than its factorization.

965871901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318430.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 965871901 is about 31078.4797086344. The cubic root of 965871901 is about 988.4920419122.

The spelling of 965871901 in words is "nine hundred sixty-five million, eight hundred seventy-one thousand, nine hundred one".