164920630 has 32 divisors (see below), whose sum is σ = 345674304. Its totient is φ = 55476096.

The previous prime is 164920619. The next prime is 164920631. The reversal of 164920630 is 36029461.

It is a junction number, because it is equal to n+sod(n) for n = 164920592 and 164920601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164920631) 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, 18517 + ... + 25936.

It is an arithmetic number, because the mean of its divisors is an integer number (10802322).

Almost surely, 2^164920630 is an apocalyptic number.

164920630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164920630 is an abundant number, since it is smaller than the sum of its proper divisors (180753674).

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

164920630 is a wasteful number, since it uses less digits than its factorization.

164920630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44520.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 164920630 is about 12842.1427339833. The cubic root of 164920630 is about 548.3926958661.

The spelling of 164920630 in words is "one hundred sixty-four million, nine hundred twenty thousand, six hundred thirty".