1219147943747 has 2 divisors, whose sum is σ = 1219147943748. Its totient is φ = 1219147943746.

The previous prime is 1219147943737. The next prime is 1219147943749. The reversal of 1219147943747 is 7473497419121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1219147943747 - 2⁶ = 1219147943683 is a prime.

Together with 1219147943749, 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 (1219147943749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609573971873 + 609573971874.

It is an arithmetic number, because the mean of its divisors is an integer number (609573971874).

Almost surely, 2^{1219147943747} is an apocalyptic number.

1219147943747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219147943747 is an equidigital number, since it uses as much as digits as its factorization.

1219147943747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 59.

The spelling of 1219147943747 in words is "one trillion, two hundred nineteen billion, one hundred forty-seven million, nine hundred forty-three thousand, seven hundred forty-seven".