395128541 has 4 divisors (see below), whose sum is σ = 415924800. Its totient is φ = 374332284.

The previous prime is 395128529. The next prime is 395128609. The reversal of 395128541 is 145821593.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 145821593 = 163 ⋅894611.

It is a cyclic number.

It is not a de Polignac number, because 395128541 - 2¹⁰ = 395127517 is a prime.

It is a super-2 number, since 2×395128541² = 312253127825577362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 395128495 and 395128504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395128241) 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, 10398101 + ... + 10398138.

It is an arithmetic number, because the mean of its divisors is an integer number (103981200).

Almost surely, 2^395128541 is an apocalyptic number.

It is an amenable number.

395128541 is a deficient number, since it is larger than the sum of its proper divisors (20796259).

395128541 is a wasteful number, since it uses less digits than its factorization.

395128541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796258.

The product of its digits is 43200, while the sum is 38.

The square root of 395128541 is about 19877.8404511154. The cubic root of 395128541 is about 733.8029729765.

The spelling of 395128541 in words is "three hundred ninety-five million, one hundred twenty-eight thousand, five hundred forty-one".