964195985 has 4 divisors (see below), whose sum is σ = 1157035188. Its totient is φ = 771356784.

The previous prime is 964195963. The next prime is 964195997. The reversal of 964195985 is 589591469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589591469 = 10337 ⋅57037.

It can be written as a sum of positive squares in 2 ways, for example, as 486511249 + 477684736 = 22057^2 + 21856^2 .

It is a cyclic number.

It is not a de Polignac number, because 964195985 - 2¹⁶ = 964130449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 964195985.

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, 96419594 + ... + 96419603.

It is an arithmetic number, because the mean of its divisors is an integer number (289258797).

Almost surely, 2^964195985 is an apocalyptic number.

It is an amenable number.

964195985 is a deficient number, since it is larger than the sum of its proper divisors (192839203).

964195985 is a wasteful number, since it uses less digits than its factorization.

964195985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192839202.

The product of its digits is 3499200, while the sum is 56.

The square root of 964195985 is about 31051.5053580338. The cubic root of 964195985 is about 987.9199892727.

The spelling of 964195985 in words is "nine hundred sixty-four million, one hundred ninety-five thousand, nine hundred eighty-five".