395881512149 has 4 divisors (see below), whose sum is σ = 401304546636. Its totient is φ = 390458477664.

The previous prime is 395881512139. The next prime is 395881512161. The reversal of 395881512149 is 941215188593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100834827025 + 295046685124 = 317545^2 + 543182^2 .

It is a cyclic number.

It is not a de Polignac number, because 395881512149 - 2¹² = 395881508053 is a prime.

It is a super-2 number, since 2×395881512149² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 395881512094 and 395881512103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395881512109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2711517134 + ... + 2711517279.

It is an arithmetic number, because the mean of its divisors is an integer number (100326136659).

Almost surely, 2^395881512149 is an apocalyptic number.

It is an amenable number.

395881512149 is a deficient number, since it is larger than the sum of its proper divisors (5423034487).

395881512149 is an equidigital number, since it uses as much as digits as its factorization.

395881512149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423034486.

The product of its digits is 3110400, while the sum is 56.

The spelling of 395881512149 in words is "three hundred ninety-five billion, eight hundred eighty-one million, five hundred twelve thousand, one hundred forty-nine".