164643412 has 12 divisors (see below), whose sum is σ = 288468180. Its totient is φ = 82223936.

The previous prime is 164643403. The next prime is 164643421. The reversal of 164643412 is 214346461.

164643412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (164643403) and next prime (164643421).

It can be written as a sum of positive squares in 2 ways, for example, as 121793296 + 42850116 = 11036^2 + 6546^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20587 + ... + 27442.

It is an arithmetic number, because the mean of its divisors is an integer number (24039015).

Almost surely, 2^164643412 is an apocalyptic number.

It is an amenable number.

164643412 is a deficient number, since it is larger than the sum of its proper divisors (123824768).

164643412 is a wasteful number, since it uses less digits than its factorization.

164643412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48890 (or 48888 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 164643412 is about 12831.3449022306. The cubic root of 164643412 is about 548.0852558850.

Adding to 164643412 its reverse (214346461), we get a palindrome (378989873).

The spelling of 164643412 in words is "one hundred sixty-four million, six hundred forty-three thousand, four hundred twelve".