164222638 has 8 divisors (see below), whose sum is σ = 249302088. Its totient is φ = 81121944.

The previous prime is 164222629. The next prime is 164222657. The reversal of 164222638 is 836222461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494481 + ... + 494812.

It is an arithmetic number, because the mean of its divisors is an integer number (31162761).

Almost surely, 2^164222638 is an apocalyptic number.

164222638 is a deficient number, since it is larger than the sum of its proper divisors (85079450).

164222638 is an equidigital number, since it uses as much as digits as its factorization.

164222638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989378.

The product of its digits is 27648, while the sum is 34.

The square root of 164222638 is about 12814.9380802250. The cubic root of 164222638 is about 547.6179494704.

The spelling of 164222638 in words is "one hundred sixty-four million, two hundred twenty-two thousand, six hundred thirty-eight".