164905912 has 8 divisors (see below), whose sum is σ = 309198600. Its totient is φ = 82452952.

The previous prime is 164905891. The next prime is 164905913. The reversal of 164905912 is 219509461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×164905912³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164905913) by changing a digit.

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 as a sum of consecutive naturals, namely, 10306612 + ... + 10306627.

It is an arithmetic number, because the mean of its divisors is an integer number (38649825).

Almost surely, 2^164905912 is an apocalyptic number.

It is an amenable number.

164905912 is a deficient number, since it is larger than the sum of its proper divisors (144292688).

164905912 is a wasteful number, since it uses less digits than its factorization.

164905912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20613245 (or 20613241 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 164905912 is about 12841.5696859847. The cubic root of 164905912 is about 548.3763819907.

The spelling of 164905912 in words is "one hundred sixty-four million, nine hundred five thousand, nine hundred twelve".