1965340563 has 32 divisors (see below), whose sum is σ = 2844979200. Its totient is φ = 1202896800.

The previous prime is 1965340543. The next prime is 1965340577. The reversal of 1965340563 is 3650435691.

It is not a de Polignac number, because 1965340563 - 2⁹ = 1965340051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1965340543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234658 + ... + 242888.

It is an arithmetic number, because the mean of its divisors is an integer number (88905600).

Almost surely, 2^1965340563 is an apocalyptic number.

1965340563 is a deficient number, since it is larger than the sum of its proper divisors (879638637).

1965340563 is a wasteful number, since it uses less digits than its factorization.

1965340563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8383.

The product of its (nonzero) digits is 291600, while the sum is 42.

The square root of 1965340563 is about 44332.1617226140. The cubic root of 1965340563 is about 1252.6005726389.

The spelling of 1965340563 in words is "one billion, nine hundred sixty-five million, three hundred forty thousand, five hundred sixty-three".