1220036365 has 8 divisors (see below), whose sum is σ = 1550163960. Its totient is φ = 918615552.

The previous prime is 1220036329. The next prime is 1220036401. The reversal of 1220036365 is 5636300221.

It is an interprime number because it is at equal distance from previous prime (1220036329) and next prime (1220036401).

It can be written as a sum of positive squares in 4 ways, for example, as 340439401 + 879596964 = 18451^2 + 29658^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220036365 - 2¹¹ = 1220034317 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 7176600 + ... + 7176769.

It is an arithmetic number, because the mean of its divisors is an integer number (193770495).

Almost surely, 2^1220036365 is an apocalyptic number.

It is an amenable number.

1220036365 is a deficient number, since it is larger than the sum of its proper divisors (330127595).

1220036365 is a wasteful number, since it uses less digits than its factorization.

1220036365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14353391.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1220036365 is about 34929.0189527275. The cubic root of 1220036365 is about 1068.5403467329.

Adding to 1220036365 its reverse (5636300221), we get a palindrome (6856336586).

The spelling of 1220036365 in words is "one billion, two hundred twenty million, thirty-six thousand, three hundred sixty-five".