164738739 has 8 divisors (see below), whose sum is σ = 239620032. Its totient is φ = 99841640.

The previous prime is 164738711. The next prime is 164738741. The reversal of 164738739 is 937837461.

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

It is a cyclic number.

It is not a de Polignac number, because 164738739 - 2⁷ = 164738611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164738239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2496009 + ... + 2496074.

It is an arithmetic number, because the mean of its divisors is an integer number (29952504).

Almost surely, 2^164738739 is an apocalyptic number.

164738739 is a deficient number, since it is larger than the sum of its proper divisors (74881293).

164738739 is a wasteful number, since it uses less digits than its factorization.

164738739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992097.

The product of its digits is 762048, while the sum is 48.

The square root of 164738739 is about 12835.0589792178. The cubic root of 164738739 is about 548.1910142271.

The spelling of 164738739 in words is "one hundred sixty-four million, seven hundred thirty-eight thousand, seven hundred thirty-nine".