163851705796 has 9 divisors (see below), whose sum is σ = 286741901901. Its totient is φ = 81925448112.

The previous prime is 163851705769. The next prime is 163851705803. The reversal of 163851705796 is 697507158361.

It is a happy number.

The square root of 163851705796 is 404786.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22126562500 + 141725143296 = 148750^2 + 376464^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163851705796.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 708376 + ... + 910768.

Almost surely, 2^163851705796 is an apocalyptic number.

163851705796 is the 404786-th square number.

It is an amenable number.

163851705796 is a deficient number, since it is larger than the sum of its proper divisors (122890196105).

163851705796 is an frugal number, since it uses more digits than its factorization.

163851705796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404790 (or 202395 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 58.

The spelling of 163851705796 in words is "one hundred sixty-three billion, eight hundred fifty-one million, seven hundred five thousand, seven hundred ninety-six".