164307381 has 32 divisors (see below), whose sum is σ = 256048128. Its totient is φ = 91787520.

The previous prime is 164307379. The next prime is 164307391. The reversal of 164307381 is 183703461.

164307381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164307381 - 2¹ = 164307379 is a prime.

It is a super-2 number, since 2×164307381² = 53993830902158322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164307391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186061 + ... + 186941.

It is an arithmetic number, because the mean of its divisors is an integer number (8001504).

Almost surely, 2^164307381 is an apocalyptic number.

It is an amenable number.

164307381 is a deficient number, since it is larger than the sum of its proper divisors (91740747).

164307381 is a wasteful number, since it uses less digits than its factorization.

164307381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 164307381 is about 12818.2440685142. The cubic root of 164307381 is about 547.7121281382.

The spelling of 164307381 in words is "one hundred sixty-four million, three hundred seven thousand, three hundred eighty-one".