385898171 has 2 divisors, whose sum is σ = 385898172. Its totient is φ = 385898170.

The previous prime is 385898131. The next prime is 385898237. The reversal of 385898171 is 171898583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385898171 - 2²² = 381703867 is a prime.

It is a super-2 number, since 2×385898171² = 297834796762290482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385898101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192949085 + 192949086.

It is an arithmetic number, because the mean of its divisors is an integer number (192949086).

Almost surely, 2^385898171 is an apocalyptic number.

385898171 is a deficient number, since it is larger than the sum of its proper divisors (1).

385898171 is an equidigital number, since it uses as much as digits as its factorization.

385898171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 50.

The square root of 385898171 is about 19644.2910536369. The cubic root of 385898171 is about 728.0439099979.

The spelling of 385898171 in words is "three hundred eighty-five million, eight hundred ninety-eight thousand, one hundred seventy-one".