164310394 has 4 divisors (see below), whose sum is σ = 246465594. Its totient is φ = 82155196.

The previous prime is 164310343. The next prime is 164310403. The reversal of 164310394 is 493013461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493013461 = 97 ⋅5082613.

It can be written as a sum of positive squares in only one way, i.e., 135419769 + 28890625 = 11637^2 + 5375^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41077597 + ... + 41077600.

Almost surely, 2^164310394 is an apocalyptic number.

164310394 is a deficient number, since it is larger than the sum of its proper divisors (82155200).

164310394 is an equidigital number, since it uses as much as digits as its factorization.

164310394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82155199.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 164310394 is about 12818.3615957735. The cubic root of 164310394 is about 547.7154760230.

The spelling of 164310394 in words is "one hundred sixty-four million, three hundred ten thousand, three hundred ninety-four".