385731445 has 32 divisors (see below), whose sum is σ = 562826880. Its totient is φ = 250122240.

The previous prime is 385731443. The next prime is 385731449. The reversal of 385731445 is 544137583.

It is not a de Polignac number, because 385731445 - 2¹ = 385731443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385731398 and 385731407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385731443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6909 + ... + 28621.

It is an arithmetic number, because the mean of its divisors is an integer number (17588340).

Almost surely, 2^385731445 is an apocalyptic number.

It is an amenable number.

385731445 is a deficient number, since it is larger than the sum of its proper divisors (177095435).

385731445 is a wasteful number, since it uses less digits than its factorization.

385731445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21765.

The product of its digits is 201600, while the sum is 40.

The square root of 385731445 is about 19640.0469704123. The cubic root of 385731445 is about 727.9390452577.

The spelling of 385731445 in words is "three hundred eighty-five million, seven hundred thirty-one thousand, four hundred forty-five".