163490646 has 16 divisors (see below), whose sum is σ = 356707008. Its totient is φ = 49542600.

The previous prime is 163490641. The next prime is 163490659. The reversal of 163490646 is 646094361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163490641) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1238500 + ... + 1238631.

It is an arithmetic number, because the mean of its divisors is an integer number (22294188).

Almost surely, 2^163490646 is an apocalyptic number.

163490646 is an abundant number, since it is smaller than the sum of its proper divisors (193216362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163490646 is a wasteful number, since it uses less digits than its factorization.

163490646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477147.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 163490646 is about 12786.3460769682. The cubic root of 163490646 is about 546.8031023891.

The spelling of 163490646 in words is "one hundred sixty-three million, four hundred ninety thousand, six hundred forty-six".