395400181 has 8 divisors (see below), whose sum is σ = 446220000. Its totient is φ = 347059440.

The previous prime is 395400163. The next prime is 395400191. The reversal of 395400181 is 181004593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395400181 is a prime.

It is a super-2 number, since 2×395400181² = 312682606269665522, 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 (395400101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619431 + ... + 620068.

It is an arithmetic number, because the mean of its divisors is an integer number (55777500).

Almost surely, 2^395400181 is an apocalyptic number.

It is an amenable number.

395400181 is a deficient number, since it is larger than the sum of its proper divisors (50819819).

395400181 is a wasteful number, since it uses less digits than its factorization.

395400181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239539.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 395400181 is about 19884.6720113760. The cubic root of 395400181 is about 733.9710909080.

The spelling of 395400181 in words is "three hundred ninety-five million, four hundred thousand, one hundred eighty-one".