1209226451 has 2 divisors, whose sum is σ = 1209226452. Its totient is φ = 1209226450.

The previous prime is 1209226411. The next prime is 1209226463. The reversal of 1209226451 is 1546229021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1209226451 - 2¹⁰ = 1209225427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1209226411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604613225 + 604613226.

It is an arithmetic number, because the mean of its divisors is an integer number (604613226).

Almost surely, 2^1209226451 is an apocalyptic number.

1209226451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1209226451 is an equidigital number, since it uses as much as digits as its factorization.

1209226451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1209226451 is about 34773.9334991025. The cubic root of 1209226451 is about 1065.3751096968.

The spelling of 1209226451 in words is "one billion, two hundred nine million, two hundred twenty-six thousand, four hundred fifty-one".