1301189819 has 2 divisors, whose sum is σ = 1301189820. Its totient is φ = 1301189818.

The previous prime is 1301189759. The next prime is 1301189821. The reversal of 1301189819 is 9189811031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301189819 - 2⁸ = 1301189563 is a prime.

It is a super-2 number, since 2×1301189819² = 3386189890138505522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1301189821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1301189839) 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, 650594909 + 650594910.

It is an arithmetic number, because the mean of its divisors is an integer number (650594910).

Almost surely, 2^1301189819 is an apocalyptic number.

1301189819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301189819 is an equidigital number, since it uses as much as digits as its factorization.

1301189819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 41.

The square root of 1301189819 is about 36072.0088018397. The cubic root of 1301189819 is about 1091.7257456311.

The spelling of 1301189819 in words is "one billion, three hundred one million, one hundred eighty-nine thousand, eight hundred nineteen".