1205219385 has 16 divisors (see below), whose sum is σ = 2142612480. Its totient is φ = 642783600.

The previous prime is 1205219341. The next prime is 1205219387. The reversal of 1205219385 is 5839125021.

1205219385 is a `hidden beast` number, since 120 + 521 + 9 + 3 + 8 + 5 = 666.

It is not a de Polignac number, because 1205219385 - 2¹⁴ = 1205203001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1205219387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4463641 + ... + 4463910.

It is an arithmetic number, because the mean of its divisors is an integer number (133913280).

Almost surely, 2^1205219385 is an apocalyptic number.

1205219385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1205219385 is a deficient number, since it is larger than the sum of its proper divisors (937393095).

1205219385 is an equidigital number, since it uses as much as digits as its factorization.

1205219385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927565 (or 8927559 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1205219385 is about 34716.2697448905. The cubic root of 1205219385 is about 1064.1970142391.

It can be divided in two parts, 1205219 and 385, that added together give a square (1205604 = 1098²).

The spelling of 1205219385 in words is "one billion, two hundred five million, two hundred nineteen thousand, three hundred eighty-five".