385897959169 has 4 divisors (see below), whose sum is σ = 386039368260. Its totient is φ = 385756550080.

The previous prime is 385897959143. The next prime is 385897959179. The reversal of 385897959169 is 961959798583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961959798583 = 7 ⋅137422828369.

It can be written as a sum of positive squares in 2 ways, for example, as 201702486769 + 184195472400 = 449113^2 + 429180^2 .

It is a cyclic number.

It is not a de Polignac number, because 385897959169 - 2⁵ = 385897959137 is a prime.

It is a super-2 number, since 2×385897959169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385897959179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70700452 + ... + 70705909.

It is an arithmetic number, because the mean of its divisors is an integer number (96509842065).

Almost surely, 2^385897959169 is an apocalyptic number.

It is an amenable number.

385897959169 is a deficient number, since it is larger than the sum of its proper divisors (141409091).

385897959169 is a wasteful number, since it uses less digits than its factorization.

385897959169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141409090.

The product of its digits is 1322697600, while the sum is 79.

The spelling of 385897959169 in words is "three hundred eighty-five billion, eight hundred ninety-seven million, nine hundred fifty-nine thousand, one hundred sixty-nine".