164785422 has 16 divisors (see below), whose sum is σ = 329696640. Its totient is φ = 54907512.

The previous prime is 164785399. The next prime is 164785447. The reversal of 164785422 is 224587461.

164785422 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28423 + ... + 33725.

It is an arithmetic number, because the mean of its divisors is an integer number (20606040).

Almost surely, 2^164785422 is an apocalyptic number.

164785422 is an abundant number, since it is smaller than the sum of its proper divisors (164911218).

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

164785422 is a wasteful number, since it uses less digits than its factorization.

164785422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10487.

The product of its digits is 107520, while the sum is 39.

The square root of 164785422 is about 12836.8774240467. The cubic root of 164785422 is about 548.2427907235.

The spelling of 164785422 in words is "one hundred sixty-four million, seven hundred eighty-five thousand, four hundred twenty-two".