166964380 has 24 divisors (see below), whose sum is σ = 382500720. Its totient is φ = 60714240.

The previous prime is 166964353. The next prime is 166964389. The reversal of 166964380 is 83469661.

166964380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166964389) 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, 379245 + ... + 379684.

It is an arithmetic number, because the mean of its divisors is an integer number (15937530).

Almost surely, 2^166964380 is an apocalyptic number.

166964380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166964380 is an abundant number, since it is smaller than the sum of its proper divisors (215536340).

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

166964380 is a wasteful number, since it uses less digits than its factorization.

166964380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758949 (or 758947 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 166964380 is about 12921.4697306460. The cubic root of 166964380 is about 550.6486891581.

It can be divided in two parts, 1669 and 64380, that added together give a square (66049 = 257²).

The spelling of 166964380 in words is "one hundred sixty-six million, nine hundred sixty-four thousand, three hundred eighty".