263173164 has 24 divisors (see below), whose sum is σ = 618556848. Its totient is φ = 87083520.

The previous prime is 263173159. The next prime is 263173171. The reversal of 263173164 is 461371362.

It is a super-2 number, since 2×263173164² = 138520228499541792, which contains 22 as substring.

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, 78397 + ... + 81684.

It is an arithmetic number, because the mean of its divisors is an integer number (25773202).

Almost surely, 2^263173164 is an apocalyptic number.

It is an amenable number.

263173164 is an abundant number, since it is smaller than the sum of its proper divisors (355383684).

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

263173164 is a wasteful number, since it uses less digits than its factorization.

263173164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160225 (or 160223 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 263173164 is about 16222.6127365477. The cubic root of 263173164 is about 640.8364421506.

The spelling of 263173164 in words is "two hundred sixty-three million, one hundred seventy-three thousand, one hundred sixty-four".