163923090 has 16 divisors (see below), whose sum is σ = 393415488. Its totient is φ = 43712816.

The previous prime is 163923083. The next prime is 163923107. The reversal of 163923090 is 90329361.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732022 + ... + 2732081.

It is an arithmetic number, because the mean of its divisors is an integer number (24588468).

Almost surely, 2^163923090 is an apocalyptic number.

163923090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163923090 is an abundant number, since it is smaller than the sum of its proper divisors (229492398).

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

163923090 is a wasteful number, since it uses less digits than its factorization.

163923090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464113.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 163923090 is about 12803.2452917219. The cubic root of 163923090 is about 547.2847885418.

The spelling of 163923090 in words is "one hundred sixty-three million, nine hundred twenty-three thousand, ninety".