163878823 has 2 divisors, whose sum is σ = 163878824. Its totient is φ = 163878822.

The previous prime is 163878787. The next prime is 163878853. The reversal of 163878823 is 328878361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163878823 - 2¹⁷ = 163747751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163878853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81939411 + 81939412.

It is an arithmetic number, because the mean of its divisors is an integer number (81939412).

Almost surely, 2^163878823 is an apocalyptic number.

163878823 is a deficient number, since it is larger than the sum of its proper divisors (1).

163878823 is an equidigital number, since it uses as much as digits as its factorization.

163878823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 163878823 is about 12801.5164336105. The cubic root of 163878823 is about 547.2355198332.

The spelling of 163878823 in words is "one hundred sixty-three million, eight hundred seventy-eight thousand, eight hundred twenty-three".