8145381 has 16 divisors (see below), whose sum is σ = 11458944. Its totient is φ = 5136384.

The previous prime is 8145367. The next prime is 8145407. The reversal of 8145381 is 1835418.

8145381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8145381 - 2⁵ = 8145349 is a prime.

It is a super-2 number, since 2×8145381² = 132694463270322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6085 + ... + 7301.

It is an arithmetic number, because the mean of its divisors is an integer number (716184).

Almost surely, 2^8145381 is an apocalyptic number.

It is an amenable number.

8145381 is a deficient number, since it is larger than the sum of its proper divisors (3313563).

8145381 is a wasteful number, since it uses less digits than its factorization.

8145381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 3840, while the sum is 30.

The square root of 8145381 is about 2854.0113875036. The cubic root of 8145381 is about 201.2042427767.

The spelling of 8145381 in words is "eight million, one hundred forty-five thousand, three hundred eighty-one".