164386140 has 24 divisors (see below), whose sum is σ = 460281360. Its totient is φ = 43836288.

The previous prime is 164386127. The next prime is 164386147. The reversal of 164386140 is 41683461.

164386140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×164386140³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164386147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369825 + ... + 1369944.

It is an arithmetic number, because the mean of its divisors is an integer number (19178390).

Almost surely, 2^164386140 is an apocalyptic number.

164386140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164386140 is an abundant number, since it is smaller than the sum of its proper divisors (295895220).

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

164386140 is a wasteful number, since it uses less digits than its factorization.

164386140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739781 (or 2739779 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 164386140 is about 12821.3158451073. The cubic root of 164386140 is about 547.7996274918.

It can be divided in two parts, 16438 and 6140, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 164386140 in words is "one hundred sixty-four million, three hundred eighty-six thousand, one hundred forty".