1361128219 has 8 divisors (see below), whose sum is σ = 1487148912. Its totient is φ = 1235487840.

The previous prime is 1361128199. The next prime is 1361128267. The reversal of 1361128219 is 9128211631.

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 1361128219 - 2¹⁹ = 1360603931 is a prime.

It is a super-2 number, since 2×1361128219² = 3705340057116223922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361128019) by changing a digit.

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, 87564 + ... + 101929.

It is an arithmetic number, because the mean of its divisors is an integer number (185893614).

Almost surely, 2^1361128219 is an apocalyptic number.

1361128219 is a deficient number, since it is larger than the sum of its proper divisors (126020693).

1361128219 is a wasteful number, since it uses less digits than its factorization.

1361128219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190157.

The product of its digits is 5184, while the sum is 34.

The square root of 1361128219 is about 36893.4712245947. The cubic root of 1361128219 is about 1108.2379366564.

The spelling of 1361128219 in words is "one billion, three hundred sixty-one million, one hundred twenty-eight thousand, two hundred nineteen".