1965518536 has 16 divisors (see below), whose sum is σ = 3879313200. Its totient is φ = 931035024.

The previous prime is 1965518531. The next prime is 1965518537. The reversal of 1965518536 is 6358155691.

It is a self number, because there is not a number n which added to its sum of digits gives 1965518536.

It is not an unprimeable number, because it can be changed into a prime (1965518531) 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 3 ways as a sum of consecutive naturals, for example, 6465370 + ... + 6465673.

It is an arithmetic number, because the mean of its divisors is an integer number (242457075).

Almost surely, 2^1965518536 is an apocalyptic number.

It is an amenable number.

1965518536 is a deficient number, since it is larger than the sum of its proper divisors (1913794664).

1965518536 is a wasteful number, since it uses less digits than its factorization.

1965518536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12931068 (or 12931064 counting only the distinct ones).

The product of its digits is 972000, while the sum is 49.

The square root of 1965518536 is about 44334.1689445060. The cubic root of 1965518536 is about 1252.6383815827.

The spelling of 1965518536 in words is "one billion, nine hundred sixty-five million, five hundred eighteen thousand, five hundred thirty-six".