965143644 has 12 divisors (see below), whose sum is σ = 2252001864. Its totient is φ = 321714544.

The previous prime is 965143609. The next prime is 965143651. The reversal of 965143644 is 446341569.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 965143596 and 965143605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40214307 + ... + 40214330.

It is an arithmetic number, because the mean of its divisors is an integer number (187666822).

Almost surely, 2^965143644 is an apocalyptic number.

It is an amenable number.

965143644 is an abundant number, since it is smaller than the sum of its proper divisors (1286858220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

965143644 is a wasteful number, since it uses less digits than its factorization.

965143644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80428644 (or 80428642 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 965143644 is about 31066.7610799710. The cubic root of 965143644 is about 988.2435419988.

The spelling of 965143644 in words is "nine hundred sixty-five million, one hundred forty-three thousand, six hundred forty-four".