395342181 has 32 divisors (see below), whose sum is σ = 652512000. Its totient is φ = 234892224.

The previous prime is 395342081. The next prime is 395342201. The reversal of 395342181 is 181243593.

It is not a de Polignac number, because 395342181 - 2⁹ = 395341669 is a prime.

It is a super-2 number, since 2×395342181² = 312590880155673522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395342081) 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, 9241 + ... + 29598.

It is an arithmetic number, because the mean of its divisors is an integer number (20391000).

Almost surely, 2^395342181 is an apocalyptic number.

It is an amenable number.

395342181 is a deficient number, since it is larger than the sum of its proper divisors (257169819).

395342181 is a wasteful number, since it uses less digits than its factorization.

395342181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38890 (or 38884 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 395342181 is about 19883.2135481164. The cubic root of 395342181 is about 733.9352011884.

The spelling of 395342181 in words is "three hundred ninety-five million, three hundred forty-two thousand, one hundred eighty-one".