164642370 has 32 divisors (see below), whose sum is σ = 397438272. Its totient is φ = 43649472.

The previous prime is 164642339. The next prime is 164642389. The reversal of 164642370 is 73246461.

It is a happy number.

164642370 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 10672 + ... + 21051.

It is an arithmetic number, because the mean of its divisors is an integer number (12419946).

Almost surely, 2^164642370 is an apocalyptic number.

164642370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164642370 is an abundant number, since it is smaller than the sum of its proper divisors (232795902).

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

164642370 is a wasteful number, since it uses less digits than its factorization.

164642370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31906.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 164642370 is about 12831.3042984725. The cubic root of 164642370 is about 548.0840996366.

The spelling of 164642370 in words is "one hundred sixty-four million, six hundred forty-two thousand, three hundred seventy".