164216380 has 12 divisors (see below), whose sum is σ = 344854440. Its totient is φ = 65686544.

The previous prime is 164216369. The next prime is 164216383. The reversal of 164216380 is 83612461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164216383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105390 + ... + 4105429.

It is an arithmetic number, because the mean of its divisors is an integer number (28737870).

Almost surely, 2^164216380 is an apocalyptic number.

164216380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164216380 is an abundant number, since it is smaller than the sum of its proper divisors (180638060).

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

164216380 is a wasteful number, since it uses less digits than its factorization.

164216380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210828 (or 8210826 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 164216380 is about 12814.6939097272. The cubic root of 164216380 is about 547.6109933919.

It can be divided in two parts, 16421 and 6380, that added together give a square (22801 = 151²).

The spelling of 164216380 in words is "one hundred sixty-four million, two hundred sixteen thousand, three hundred eighty".