164206738 has 4 divisors (see below), whose sum is σ = 246310110. Its totient is φ = 82103368.

The previous prime is 164206733. The next prime is 164206739. The reversal of 164206738 is 837602461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 164019249 + 187489 = 12807^2 + 433^2 .

It is a junction number, because it is equal to n+sod(n) for n = 164206697 and 164206706.

It is not an unprimeable number, because it can be changed into a prime (164206733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41051683 + ... + 41051686.

Almost surely, 2^164206738 is an apocalyptic number.

164206738 is a deficient number, since it is larger than the sum of its proper divisors (82103372).

164206738 is an equidigital number, since it uses as much as digits as its factorization.

164206738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82103371.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 164206738 is about 12814.3176954530. The cubic root of 164206738 is about 547.6002754831.

The spelling of 164206738 in words is "one hundred sixty-four million, two hundred six thousand, seven hundred thirty-eight".