164430381 has 8 divisors (see below), whose sum is σ = 228772800. Its totient is φ = 104854112.

The previous prime is 164430361. The next prime is 164430407. The reversal of 164430381 is 183034461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164430381 - 2⁵ = 164430349 is a prime.

It is a super-3 number, since 3×164430381³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164430361) 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, 1191456 + ... + 1191593.

It is an arithmetic number, because the mean of its divisors is an integer number (28596600).

Almost surely, 2^164430381 is an apocalyptic number.

It is an amenable number.

164430381 is a deficient number, since it is larger than the sum of its proper divisors (64342419).

164430381 is a wasteful number, since it uses less digits than its factorization.

164430381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383075.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 164430381 is about 12823.0410199765. The cubic root of 164430381 is about 547.8487659198.

The spelling of 164430381 in words is "one hundred sixty-four million, four hundred thirty thousand, three hundred eighty-one".