163739890208 has 24 divisors (see below), whose sum is σ = 322952272272. Its totient is φ = 81720265536.

The previous prime is 163739890159. The next prime is 163739890211. The reversal of 163739890208 is 802098937361.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4659710 + ... + 4694717.

It is an arithmetic number, because the mean of its divisors is an integer number (13456344678).

Almost surely, 2^163739890208 is an apocalyptic number.

It is an amenable number.

163739890208 is a deficient number, since it is larger than the sum of its proper divisors (159212382064).

163739890208 is an equidigital number, since it uses as much as digits as its factorization.

163739890208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9354984 (or 9354976 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 163739890208 in words is "one hundred sixty-three billion, seven hundred thirty-nine million, eight hundred ninety thousand, two hundred eight".