1965163564 has 48 divisors (see below), whose sum is σ = 4270206528. Its totient is φ = 770531328.

The previous prime is 1965163549. The next prime is 1965163663. The reversal of 1965163564 is 4653615691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17244 + ... + 65020.

It is an arithmetic number, because the mean of its divisors is an integer number (88962636).

Almost surely, 2^1965163564 is an apocalyptic number.

1965163564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1965163564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135103264).

1965163564 is an abundant number, since it is smaller than the sum of its proper divisors (2305042964).

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

1965163564 is a wasteful number, since it uses less digits than its factorization.

1965163564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47914 (or 47912 counting only the distinct ones).

The product of its digits is 583200, while the sum is 46.

The square root of 1965163564 is about 44330.1653955859. The cubic root of 1965163564 is about 1252.5629683497.

The spelling of 1965163564 in words is "one billion, nine hundred sixty-five million, one hundred sixty-three thousand, five hundred sixty-four".