1222463791 has 2 divisors, whose sum is σ = 1222463792. Its totient is φ = 1222463790.

The previous prime is 1222463783. The next prime is 1222463797. The reversal of 1222463791 is 1973642221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1973642221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222463791 - 2³ = 1222463783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222463791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222463797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611231895 + 611231896.

It is an arithmetic number, because the mean of its divisors is an integer number (611231896).

Almost surely, 2^1222463791 is an apocalyptic number.

1222463791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222463791 is an equidigital number, since it uses as much as digits as its factorization.

1222463791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 1222463791 is about 34963.7496701941. The cubic root of 1222463791 is about 1069.2485453718.

The spelling of 1222463791 in words is "one billion, two hundred twenty-two million, four hundred sixty-three thousand, seven hundred ninety-one".