163815382 has 4 divisors (see below), whose sum is σ = 245723076. Its totient is φ = 81907690.

The previous prime is 163815367. The next prime is 163815433. The reversal of 163815382 is 283518361.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40953844 + ... + 40953847.

It is an arithmetic number, because the mean of its divisors is an integer number (61430769).

Almost surely, 2^163815382 is an apocalyptic number.

163815382 is a deficient number, since it is larger than the sum of its proper divisors (81907694).

163815382 is an equidigital number, since it uses as much as digits as its factorization.

163815382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81907693.

The product of its digits is 34560, while the sum is 37.

The square root of 163815382 is about 12799.0383232491. The cubic root of 163815382 is about 547.1648951915.

It can be divided in two parts, 1638 and 15382, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 163815382 in words is "one hundred sixty-three million, eight hundred fifteen thousand, three hundred eighty-two".