164145630 has 32 divisors (see below), whose sum is σ = 429763968. Its totient is φ = 39792800.

The previous prime is 164145629. The next prime is 164145649. The reversal of 164145630 is 36541461.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248376 + ... + 249035.

It is an arithmetic number, because the mean of its divisors is an integer number (13430124).

Almost surely, 2^164145630 is an apocalyptic number.

164145630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164145630 is an abundant number, since it is smaller than the sum of its proper divisors (265618338).

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

164145630 is a wasteful number, since it uses less digits than its factorization.

164145630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497432.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 164145630 is about 12811.9331094101. The cubic root of 164145630 is about 547.5323389501.

The spelling of 164145630 in words is "one hundred sixty-four million, one hundred forty-five thousand, six hundred thirty".