1996136565 has 16 divisors (see below), whose sum is σ = 3195504000. Its totient is φ = 1064044352.

The previous prime is 1996136551. The next prime is 1996136587. The reversal of 1996136565 is 5656316991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1996136565 - 2¹³ = 1996128373 is a prime.

It is a super-2 number, since 2×1996136565² = 7969122372259998450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 63374.

It is an arithmetic number, because the mean of its divisors is an integer number (199719000).

Almost surely, 2^1996136565 is an apocalyptic number.

1996136565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1996136565 is a deficient number, since it is larger than the sum of its proper divisors (1199367435).

1996136565 is a wasteful number, since it uses less digits than its factorization.

1996136565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70236.

The product of its digits is 1312200, while the sum is 51.

The square root of 1996136565 is about 44678.1441534896. The cubic root of 1996136565 is about 1259.1092564382.

The spelling of 1996136565 in words is "one billion, nine hundred ninety-six million, one hundred thirty-six thousand, five hundred sixty-five".