164515730 has 8 divisors (see below), whose sum is σ = 296128332. Its totient is φ = 65806288.

The previous prime is 164515693. The next prime is 164515781. The reversal of 164515730 is 37515461.

It can be written as a sum of positive squares in 2 ways, for example, as 160300921 + 4214809 = 12661^2 + 2053^2 .

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

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, 8225777 + ... + 8225796.

Almost surely, 2^164515730 is an apocalyptic number.

164515730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164515730 is a deficient number, since it is larger than the sum of its proper divisors (131612602).

164515730 is a wasteful number, since it uses less digits than its factorization.

164515730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16451580.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 164515730 is about 12826.3685429665. The cubic root of 164515730 is about 547.9435380583.

The spelling of 164515730 in words is "one hundred sixty-four million, five hundred fifteen thousand, seven hundred thirty".