163920716 has 6 divisors (see below), whose sum is σ = 286861260. Its totient is φ = 81960356.

The previous prime is 163920707. The next prime is 163920721. The reversal of 163920716 is 617029361.

163920716 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163920716² = 53740002267905312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20490086 + ... + 20490093.

It is an arithmetic number, because the mean of its divisors is an integer number (47810210).

Almost surely, 2^163920716 is an apocalyptic number.

It is an amenable number.

163920716 is a deficient number, since it is larger than the sum of its proper divisors (122940544).

163920716 is a wasteful number, since it uses less digits than its factorization.

163920716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40980183 (or 40980181 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 163920716 is about 12803.1525805170. The cubic root of 163920716 is about 547.2821465297.

The spelling of 163920716 in words is "one hundred sixty-three million, nine hundred twenty thousand, seven hundred sixteen".