164145434 has 32 divisors (see below), whose sum is σ = 269844480. Its totient is φ = 74646000.

The previous prime is 164145433. The next prime is 164145463. The reversal of 164145434 is 434541461.

It is a self number, because there is not a number n which added to its sum of digits gives 164145434.

It is not an unprimeable number, because it can be changed into a prime (164145433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83159 + ... + 85109.

It is an arithmetic number, because the mean of its divisors is an integer number (8432640).

Almost surely, 2^164145434 is an apocalyptic number.

164145434 is a deficient number, since it is larger than the sum of its proper divisors (105699046).

164145434 is a wasteful number, since it uses less digits than its factorization.

164145434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066.

The product of its digits is 23040, while the sum is 32.

The square root of 164145434 is about 12811.9254602889. The cubic root of 164145434 is about 547.5321210209.

Adding to 164145434 its reverse (434541461), we get a palindrome (598686895).

The spelling of 164145434 in words is "one hundred sixty-four million, one hundred forty-five thousand, four hundred thirty-four".