164425380 has 72 divisors (see below), whose sum is σ = 535566528. Its totient is φ = 37582272.

The previous prime is 164425369. The next prime is 164425381. The reversal of 164425380 is 83524461.

It is a super-3 number, since 3×164425380³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (164425381) 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, 25024 + ... + 30903.

It is an arithmetic number, because the mean of its divisors is an integer number (7438424).

Almost surely, 2^164425380 is an apocalyptic number.

164425380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164425380 is an abundant number, since it is smaller than the sum of its proper divisors (371141148).

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

164425380 is a wasteful number, since it uses less digits than its factorization.

164425380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55953 (or 55944 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 164425380 is about 12822.8460179478. The cubic root of 164425380 is about 547.8432117567.

The spelling of 164425380 in words is "one hundred sixty-four million, four hundred twenty-five thousand, three hundred eighty".