164346745 has 4 divisors (see below), whose sum is σ = 197216100. Its totient is φ = 131477392.

The previous prime is 164346719. The next prime is 164346773. The reversal of 164346745 is 547643461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547643461 = 67 ⋅8173783.

It can be written as a sum of positive squares in 2 ways, for example, as 20034576 + 144312169 = 4476^2 + 12013^2 .

It is a cyclic number.

It is not a de Polignac number, because 164346745 - 2¹³ = 164338553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164346698 and 164346707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16434670 + ... + 16434679.

It is an arithmetic number, because the mean of its divisors is an integer number (49304025).

Almost surely, 2^164346745 is an apocalyptic number.

It is an amenable number.

164346745 is a deficient number, since it is larger than the sum of its proper divisors (32869355).

164346745 is an equidigital number, since it uses as much as digits as its factorization.

164346745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32869354.

The product of its digits is 241920, while the sum is 40.

The square root of 164346745 is about 12819.7794442806. The cubic root of 164346745 is about 547.7558640892.

The spelling of 164346745 in words is "one hundred sixty-four million, three hundred forty-six thousand, seven hundred forty-five".