8146381 has 4 divisors (see below), whose sum is σ = 8154432. Its totient is φ = 8138332.

The previous prime is 8146363. The next prime is 8146387. The reversal of 8146381 is 1836418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1836418 = 2 ⋅918209.

It is a cyclic number.

It is not a de Polignac number, because 8146381 - 2¹⁹ = 7622093 is a prime.

It is a super-2 number, since 2×8146381² = 132727046794322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8146387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245 + ... + 4618.

It is an arithmetic number, because the mean of its divisors is an integer number (2038608).

Almost surely, 2^8146381 is an apocalyptic number.

It is an amenable number.

8146381 is a deficient number, since it is larger than the sum of its proper divisors (8051).

8146381 is a wasteful number, since it uses less digits than its factorization.

8146381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050.

The product of its digits is 4608, while the sum is 31.

The square root of 8146381 is about 2854.1865741398. The cubic root of 8146381 is about 201.2124763187.

The spelling of 8146381 in words is "eight million, one hundred forty-six thousand, three hundred eighty-one".