164139129 has 40 divisors (see below), whose sum is σ = 305709888. Its totient is φ = 85263840.

The previous prime is 164139091. The next prime is 164139137. The reversal of 164139129 is 921931461.

It is a happy number.

164139129 is a `hidden beast` number, since 1 + 641 + 3 + 9 + 1 + 2 + 9 = 666.

It is not a de Polignac number, because 164139129 - 2¹¹ = 164137081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164139093 and 164139102.

It is not an unprimeable number, because it can be changed into a prime (164139529) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6922 + ... + 19395.

Almost surely, 2^164139129 is an apocalyptic number.

It is an amenable number.

164139129 is a deficient number, since it is larger than the sum of its proper divisors (141570759).

164139129 is a wasteful number, since it uses less digits than its factorization.

164139129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26347 (or 26338 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 164139129 is about 12811.6793981117. The cubic root of 164139129 is about 547.5251105015.

The spelling of 164139129 in words is "one hundred sixty-four million, one hundred thirty-nine thousand, one hundred twenty-nine".