163491004 has 24 divisors (see below), whose sum is σ = 292900608. Its totient is φ = 79813680.

The previous prime is 163490983. The next prime is 163491011. The reversal of 163491004 is 400194361.

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 in 7 ways as a sum of consecutive naturals, for example, 106587 + ... + 108109.

It is an arithmetic number, because the mean of its divisors is an integer number (12204192).

Almost surely, 2^163491004 is an apocalyptic number.

It is an amenable number.

163491004 is a deficient number, since it is larger than the sum of its proper divisors (129409604).

163491004 is a wasteful number, since it uses less digits than its factorization.

163491004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 163491004 is about 12786.3600762688. The cubic root of 163491004 is about 546.8035015055.

The spelling of 163491004 in words is "one hundred sixty-three million, four hundred ninety-one thousand, four".