164117812 has 12 divisors (see below), whose sum is σ = 289841860. Its totient is φ = 81305856.

The previous prime is 164117783. The next prime is 164117827. The reversal of 164117812 is 218711461.

It can be written as a sum of positive squares in 2 ways, for example, as 71842576 + 92275236 = 8476^2 + 9606^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187773 + ... + 188644.

Almost surely, 2^164117812 is an apocalyptic number.

It is an amenable number.

164117812 is a deficient number, since it is larger than the sum of its proper divisors (125724048).

164117812 is a wasteful number, since it uses less digits than its factorization.

164117812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376530 (or 376528 counting only the distinct ones).

The product of its digits is 2688, while the sum is 31.

The square root of 164117812 is about 12810.8474348889. The cubic root of 164117812 is about 547.5014068339.

The spelling of 164117812 in words is "one hundred sixty-four million, one hundred seventeen thousand, eight hundred twelve".