164391530 has 32 divisors (see below), whose sum is σ = 314027280. Its totient is φ = 61747200.

The previous prime is 164391503. The next prime is 164391533. The reversal of 164391530 is 35193461.

164391530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 157678249 + 6713281 = 12557^2 + 2591^2 .

It is not an unprimeable number, because it can be changed into a prime (164391533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101366 + ... + 102974.

Almost surely, 2^164391530 is an apocalyptic number.

164391530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164391530 is a deficient number, since it is larger than the sum of its proper divisors (149635750).

164391530 is a wasteful number, since it uses less digits than its factorization.

164391530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 164391530 is about 12821.5260402185. The cubic root of 164391530 is about 547.8056146302.

The spelling of 164391530 in words is "one hundred sixty-four million, three hundred ninety-one thousand, five hundred thirty".