385919845 has 4 divisors (see below), whose sum is σ = 463103820. Its totient is φ = 308735872.

The previous prime is 385919813. The next prime is 385919869. The reversal of 385919845 is 548919583.

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 305620324 + 80299521 = 17482^2 + 8961^2 .

It is a cyclic number.

It is not a de Polignac number, because 385919845 - 2⁵ = 385919813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385919792 and 385919801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38591980 + ... + 38591989.

It is an arithmetic number, because the mean of its divisors is an integer number (115775955).

Almost surely, 2^385919845 is an apocalyptic number.

It is an amenable number.

385919845 is a deficient number, since it is larger than the sum of its proper divisors (77183975).

385919845 is an equidigital number, since it uses as much as digits as its factorization.

385919845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77183974.

The product of its digits is 1555200, while the sum is 52.

The square root of 385919845 is about 19644.8427074385. The cubic root of 385919845 is about 728.0575399565.

It can be divided in two parts, 38591 and 9845, that multiplied together give a triangular number (379928395 = T₂₇₅₆₅).

The spelling of 385919845 in words is "three hundred eighty-five million, nine hundred nineteen thousand, eight hundred forty-five".