164940523 has 16 divisors (see below), whose sum is σ = 183640032. Its totient is φ = 146880000.

The previous prime is 164940497. The next prime is 164940547. The reversal of 164940523 is 325049461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 164940523 - 2¹⁷ = 164809451 is a prime.

It is a super-2 number, since 2×164940523² = 54410752255027058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164940583) 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, 268765 + ... + 269377.

It is an arithmetic number, because the mean of its divisors is an integer number (11477502).

Almost surely, 2^164940523 is an apocalyptic number.

164940523 is a deficient number, since it is larger than the sum of its proper divisors (18699509).

164940523 is a wasteful number, since it uses less digits than its factorization.

164940523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 164940523 is about 12842.9172309098. The cubic root of 164940523 is about 548.4147443252.

Adding to 164940523 its reverse (325049461), we get a palindrome (489989984).

The spelling of 164940523 in words is "one hundred sixty-four million, nine hundred forty thousand, five hundred twenty-three".