395494951257 has 24 divisors (see below), whose sum is σ = 652897237824. Its totient is φ = 225991340064.

The previous prime is 395494951253. The next prime is 395494951339. The reversal of 395494951257 is 752159494593.

395494951257 is a `hidden beast` number, since 3 + 9 + 5 + 494 + 95 + 1 + 2 + 57 = 666.

It is not a de Polignac number, because 395494951257 - 2² = 395494951253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 395494951194 and 395494951203.

It is not an unprimeable number, because it can be changed into a prime (395494951253) 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 23 ways as a sum of consecutive naturals, for example, 4220838 + ... + 4313520.

It is an arithmetic number, because the mean of its divisors is an integer number (27204051576).

Almost surely, 2^395494951257 is an apocalyptic number.

It is an amenable number.

395494951257 is a deficient number, since it is larger than the sum of its proper divisors (257402286567).

395494951257 is a wasteful number, since it uses less digits than its factorization.

395494951257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160429 (or 160426 counting only the distinct ones).

The product of its digits is 61236000, while the sum is 63.

The spelling of 395494951257 in words is "three hundred ninety-five billion, four hundred ninety-four million, nine hundred fifty-one thousand, two hundred fifty-seven".