164216415 has 32 divisors (see below), whose sum is σ = 296524800. Its totient is φ = 76872320.

The previous prime is 164216399. The next prime is 164216509. The reversal of 164216415 is 514612461.

It is not a de Polignac number, because 164216415 - 2⁴ = 164216399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12375 + ... + 21944.

It is an arithmetic number, because the mean of its divisors is an integer number (9266400).

Almost surely, 2^164216415 is an apocalyptic number.

164216415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164216415 is a deficient number, since it is larger than the sum of its proper divisors (132308385).

164216415 is a wasteful number, since it uses less digits than its factorization.

164216415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34367.

The product of its digits is 5760, while the sum is 30.

The square root of 164216415 is about 12814.6952753470. The cubic root of 164216415 is about 547.6110322966.

Adding to 164216415 its reverse (514612461), we get a palindrome (678828876).

The spelling of 164216415 in words is "one hundred sixty-four million, two hundred sixteen thousand, four hundred fifteen".