164156860 has 72 divisors (see below), whose sum is σ = 403570944. Its totient is φ = 55923840.

The previous prime is 164156813. The next prime is 164156869. The reversal of 164156860 is 68651461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164156869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186742 + ... + 187618.

It is an arithmetic number, because the mean of its divisors is an integer number (5605152).

Almost surely, 2^164156860 is an apocalyptic number.

164156860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164156860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201785472).

164156860 is an abundant number, since it is smaller than the sum of its proper divisors (239414084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164156860 is a wasteful number, since it uses less digits than its factorization.

164156860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 164156860 is about 12812.3713652079. The cubic root of 164156860 is about 547.5448251145.

The spelling of 164156860 in words is "one hundred sixty-four million, one hundred fifty-six thousand, eight hundred sixty".