164371780 has 12 divisors (see below), whose sum is σ = 345180780. Its totient is φ = 65748704.

The previous prime is 164371771. The next prime is 164371787. The reversal of 164371780 is 87173461.

164371780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 75898944 + 88472836 = 8712^2 + 9406^2 .

It is not an unprimeable number, because it can be changed into a prime (164371787) 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, 4109275 + ... + 4109314.

It is an arithmetic number, because the mean of its divisors is an integer number (28765065).

Almost surely, 2^164371780 is an apocalyptic number.

164371780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164371780 is an abundant number, since it is smaller than the sum of its proper divisors (180809000).

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

164371780 is a wasteful number, since it uses less digits than its factorization.

164371780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8218598 (or 8218596 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 164371780 is about 12820.7558279534. The cubic root of 164371780 is about 547.7836759610.

The spelling of 164371780 in words is "one hundred sixty-four million, three hundred seventy-one thousand, seven hundred eighty".