1223011619 has 2 divisors, whose sum is σ = 1223011620. Its totient is φ = 1223011618.

The previous prime is 1223011609. The next prime is 1223011661. The reversal of 1223011619 is 9161103221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223011619 is a prime.

It is a super-2 number, since 2×1223011619² = 2991514840418002322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1223011609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611505809 + 611505810.

It is an arithmetic number, because the mean of its divisors is an integer number (611505810).

Almost surely, 2^1223011619 is an apocalyptic number.

1223011619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223011619 is an equidigital number, since it uses as much as digits as its factorization.

1223011619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1223011619 is about 34971.5830210758. The cubic root of 1223011619 is about 1069.4082438479.

The spelling of 1223011619 in words is "one billion, two hundred twenty-three million, eleven thousand, six hundred nineteen".