1381216219 has 2 divisors, whose sum is σ = 1381216220. Its totient is φ = 1381216218.

The previous prime is 1381216183. The next prime is 1381216237. The reversal of 1381216219 is 9126121831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1381216219 - 2⁹ = 1381215707 is a prime.

It is a super-2 number, since 2×1381216219² = 3815516487257311922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1381216259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690608109 + 690608110.

It is an arithmetic number, because the mean of its divisors is an integer number (690608110).

Almost surely, 2^1381216219 is an apocalyptic number.

1381216219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381216219 is an equidigital number, since it uses as much as digits as its factorization.

1381216219 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1381216219 is about 37164.7173943244. The cubic root of 1381216219 is about 1113.6632532957.

The spelling of 1381216219 in words is "one billion, three hundred eighty-one million, two hundred sixteen thousand, two hundred nineteen".