164400515 has 8 divisors (see below), whose sum is σ = 197358000. Its totient is φ = 131468832.

The previous prime is 164400499. The next prime is 164400539. The reversal of 164400515 is 515004461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164400515 - 2⁴ = 164400499 is a prime.

It is a super-3 number, since 3×164400515³ (a number of 26 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 12797 + ... + 22193.

It is an arithmetic number, because the mean of its divisors is an integer number (24669750).

Almost surely, 2^164400515 is an apocalyptic number.

164400515 is a deficient number, since it is larger than the sum of its proper divisors (32957485).

164400515 is an equidigital number, since it uses as much as digits as its factorization.

164400515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12901.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 164400515 is about 12821.8764227394. The cubic root of 164400515 is about 547.8155947546.

Adding to 164400515 its reverse (515004461), we get a palindrome (679404976).

The spelling of 164400515 in words is "one hundred sixty-four million, four hundred thousand, five hundred fifteen".