164431516 has 6 divisors (see below), whose sum is σ = 287755160. Its totient is φ = 82215756.

The previous prime is 164431507. The next prime is 164431517. The reversal of 164431516 is 615134461.

It is a super-3 number, since 3×164431516³ (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 (164431517) 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, 20553936 + ... + 20553943.

Almost surely, 2^164431516 is an apocalyptic number.

It is an amenable number.

164431516 is a deficient number, since it is larger than the sum of its proper divisors (123323644).

164431516 is a wasteful number, since it uses less digits than its factorization.

164431516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41107883 (or 41107881 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 164431516 is about 12823.0852761728. The cubic root of 164431516 is about 547.8500264470.

Adding to 164431516 its reverse (615134461), we get a palindrome (779565977).

The spelling of 164431516 in words is "one hundred sixty-four million, four hundred thirty-one thousand, five hundred sixteen".