163956383 has 4 divisors (see below), whose sum is σ = 165460680. Its totient is φ = 162452088.

The previous prime is 163956367. The next prime is 163956407. The reversal of 163956383 is 383659361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383659361 = 479 ⋅800959.

It is a cyclic number.

It is not a de Polignac number, because 163956383 - 2⁴ = 163956367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163956983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751985 + ... + 752202.

It is an arithmetic number, because the mean of its divisors is an integer number (41365170).

Almost surely, 2^163956383 is an apocalyptic number.

163956383 is a deficient number, since it is larger than the sum of its proper divisors (1504297).

163956383 is a wasteful number, since it uses less digits than its factorization.

163956383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504296.

The product of its digits is 349920, while the sum is 44.

The square root of 163956383 is about 12804.5454038790. The cubic root of 163956383 is about 547.3218374592.

The spelling of 163956383 in words is "one hundred sixty-three million, nine hundred fifty-six thousand, three hundred eighty-three".