1084205385 has 32 divisors (see below), whose sum is σ = 1938168960. Its totient is φ = 575035200.

The previous prime is 1084205383. The next prime is 1084205389. The reversal of 1084205385 is 5835024801.

It is a happy number.

1084205385 is a `hidden beast` number, since 108 + 420 + 53 + 85 = 666.

It is not a de Polignac number, because 1084205385 - 2¹ = 1084205383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1084205383) 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, 2250 + ... + 46620.

It is an arithmetic number, because the mean of its divisors is an integer number (60567780).

Almost surely, 2^1084205385 is an apocalyptic number.

1084205385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1084205385 is a deficient number, since it is larger than the sum of its proper divisors (853963575).

1084205385 is a wasteful number, since it uses less digits than its factorization.

1084205385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44566 (or 44560 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 1084205385 is about 32927.2741811405. The cubic root of 1084205385 is about 1027.3155297797.

The spelling of 1084205385 in words is "one billion, eighty-four million, two hundred five thousand, three hundred eighty-five".