164043938 has 8 divisors (see below), whose sum is σ = 249531840. Its totient is φ = 80866660.

The previous prime is 164043917. The next prime is 164043949. The reversal of 164043938 is 839340461.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577478 + ... + 577761.

It is an arithmetic number, because the mean of its divisors is an integer number (31191480).

Almost surely, 2^164043938 is an apocalyptic number.

164043938 is a deficient number, since it is larger than the sum of its proper divisors (85487902).

164043938 is a wasteful number, since it uses less digits than its factorization.

164043938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155312.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 164043938 is about 12807.9638506673. The cubic root of 164043938 is about 547.4192459589.

The spelling of 164043938 in words is "one hundred sixty-four million, forty-three thousand, nine hundred thirty-eight".