164131406 has 4 divisors (see below), whose sum is σ = 246197112. Its totient is φ = 82065702.

The previous prime is 164131403. The next prime is 164131423. The reversal of 164131406 is 604131461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604131461 = 7561 ⋅79901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164131403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41032850 + ... + 41032853.

It is an arithmetic number, because the mean of its divisors is an integer number (61549278).

Almost surely, 2^164131406 is an apocalyptic number.

164131406 is a deficient number, since it is larger than the sum of its proper divisors (82065706).

164131406 is an equidigital number, since it uses as much as digits as its factorization.

164131406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82065705.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 164131406 is about 12811.3779898963. The cubic root of 164131406 is about 547.5165230656.

Adding to 164131406 its reverse (604131461), we get a palindrome (768262867).

The spelling of 164131406 in words is "one hundred sixty-four million, one hundred thirty-one thousand, four hundred six".