1226653499 has 2 divisors, whose sum is σ = 1226653500. Its totient is φ = 1226653498.

The previous prime is 1226653469. The next prime is 1226653507. The reversal of 1226653499 is 9943566221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1226653499 - 2²⁸ = 958218043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226653429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613326749 + 613326750.

It is an arithmetic number, because the mean of its divisors is an integer number (613326750).

Almost surely, 2^1226653499 is an apocalyptic number.

1226653499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226653499 is an equidigital number, since it uses as much as digits as its factorization.

1226653499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 1226653499 is about 35023.6134486435. The cubic root of 1226653499 is about 1070.4686854075.

The spelling of 1226653499 in words is "one billion, two hundred twenty-six million, six hundred fifty-three thousand, four hundred ninety-nine".