1205000036 has 6 divisors (see below), whose sum is σ = 2108750070. Its totient is φ = 602500016.

The previous prime is 1205000033. The next prime is 1205000087. The reversal of 1205000036 is 6300005021.

It can be written as a sum of positive squares in only one way, i.e., 740166436 + 464833600 = 27206^2 + 21560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1204999978 and 1205000023.

It is not an unprimeable number, because it can be changed into a prime (1205000033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150625001 + ... + 150625008.

It is an arithmetic number, because the mean of its divisors is an integer number (351458345).

Almost surely, 2^1205000036 is an apocalyptic number.

It is an amenable number.

1205000036 is a deficient number, since it is larger than the sum of its proper divisors (903750034).

1205000036 is a wasteful number, since it uses less digits than its factorization.

1205000036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301250013 (or 301250011 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1205000036 is about 34713.1104339556. The cubic root of 1205000036 is about 1064.1324493097.

Adding to 1205000036 its reverse (6300005021), we get a palindrome (7505005057).

The spelling of 1205000036 in words is "one billion, two hundred five million, thirty-six", and thus it is an aban number.