1965600000018 has 24 divisors (see below), whose sum is σ = 4443965218368. Its totient is φ = 626713043352.

The previous prime is 1965600000017. The next prime is 1965600000029. The reversal of 1965600000018 is 8100000065691.

1965600000018 is a `hidden beast` number, since 1 + 96 + 560 + 0 + 0 + 0 + 0 + 0 + 1 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1965600000017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2373912630 + ... + 2373913457.

It is an arithmetic number, because the mean of its divisors is an integer number (185165217432).

Almost surely, 2^{1965600000018} is an apocalyptic number.

1965600000018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1965600000018 is an abundant number, since it is smaller than the sum of its proper divisors (2478365218350).

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

1965600000018 is a wasteful number, since it uses less digits than its factorization.

1965600000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747826118 (or 4747826115 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 1965600000018 in words is "one trillion, nine hundred sixty-five billion, six hundred million, eighteen", and thus it is an aban number.