164620131 has 16 divisors (see below), whose sum is σ = 246656256. Its totient is φ = 96899616.

The previous prime is 164620091. The next prime is 164620133. The reversal of 164620131 is 131026461.

It is not a de Polignac number, because 164620131 - 2¹⁰ = 164619107 is a prime.

It is a super-2 number, since 2×164620131² = 54199575060914322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164620133) 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, 90865 + ... + 92658.

It is an arithmetic number, because the mean of its divisors is an integer number (15416016).

Almost surely, 2^164620131 is an apocalyptic number.

164620131 is a deficient number, since it is larger than the sum of its proper divisors (82036125).

164620131 is a wasteful number, since it uses less digits than its factorization.

164620131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183562.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 164620131 is about 12830.4376776476. The cubic root of 164620131 is about 548.0594211144.

Adding to 164620131 its reverse (131026461), we get a palindrome (295646592).

The spelling of 164620131 in words is "one hundred sixty-four million, six hundred twenty thousand, one hundred thirty-one".