164240512 has 16 divisors (see below), whose sum is σ = 327198150. Its totient is φ = 82120192.

The previous prime is 164240509. The next prime is 164240551. The reversal of 164240512 is 215042461.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 154355776 + 9884736 = 12424^2 + 3144^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641437 + ... + 641692.

Almost surely, 2^164240512 is an apocalyptic number.

It is an amenable number.

164240512 is a deficient number, since it is larger than the sum of its proper divisors (162957638).

164240512 is an equidigital number, since it uses as much as digits as its factorization.

164240512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283143 (or 1283131 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 164240512 is about 12815.6354504956. The cubic root of 164240512 is about 547.6378163378.

Adding to 164240512 its reverse (215042461), we get a palindrome (379282973).

The spelling of 164240512 in words is "one hundred sixty-four million, two hundred forty thousand, five hundred twelve".