163940355 has 40 divisors (see below), whose sum is σ = 297479952. Its totient is φ = 86363712.

The previous prime is 163940327. The next prime is 163940411. The reversal of 163940355 is 553049361.

It is not a de Polignac number, because 163940355 - 2⁹ = 163939843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31177 + ... + 36053.

Almost surely, 2^163940355 is an apocalyptic number.

163940355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163940355 is a deficient number, since it is larger than the sum of its proper divisors (133539597).

163940355 is an equidigital number, since it uses as much as digits as its factorization.

163940355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977 (or 4968 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 163940355 is about 12803.9195170854. The cubic root of 163940355 is about 547.3040019021.

The spelling of 163940355 in words is "one hundred sixty-three million, nine hundred forty thousand, three hundred fifty-five".