163878983 has 2 divisors, whose sum is σ = 163878984. Its totient is φ = 163878982.

The previous prime is 163878973. The next prime is 163879003. The reversal of 163878983 is 389878361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163878983 - 2²⁰ = 162830407 is a prime.

It is a super-2 number, since 2×163878983² = 53712642138228578, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163878973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81939491 + 81939492.

It is an arithmetic number, because the mean of its divisors is an integer number (81939492).

Almost surely, 2^163878983 is an apocalyptic number.

163878983 is a deficient number, since it is larger than the sum of its proper divisors (1).

163878983 is an equidigital number, since it uses as much as digits as its factorization.

163878983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 163878983 is about 12801.5226828686. The cubic root of 163878983 is about 547.2356979275.

The spelling of 163878983 in words is "one hundred sixty-three million, eight hundred seventy-eight thousand, nine hundred eighty-three".