164509730 has 32 divisors (see below), whose sum is σ = 369187200. Its totient is φ = 51275520.

The previous prime is 164509711. The next prime is 164509739. The reversal of 164509730 is 37905461.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (164509739) 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, 106055 + ... + 107594.

It is an arithmetic number, because the mean of its divisors is an integer number (11537100).

Almost surely, 2^164509730 is an apocalyptic number.

164509730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164509730 is an abundant number, since it is smaller than the sum of its proper divisors (204677470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164509730 is a wasteful number, since it uses less digits than its factorization.

164509730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213674.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 164509730 is about 12826.1346476637. The cubic root of 164509730 is about 547.9368766868.

The spelling of 164509730 in words is "one hundred sixty-four million, five hundred nine thousand, seven hundred thirty".