1226158699 has 2 divisors, whose sum is σ = 1226158700. Its totient is φ = 1226158698.

The previous prime is 1226158691. The next prime is 1226158721. The reversal of 1226158699 is 9968516221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226158699 - 2³ = 1226158691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226158691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613079349 + 613079350.

It is an arithmetic number, because the mean of its divisors is an integer number (613079350).

Almost surely, 2^1226158699 is an apocalyptic number.

1226158699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226158699 is an equidigital number, since it uses as much as digits as its factorization.

1226158699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 1226158699 is about 35016.5489304700. The cubic root of 1226158699 is about 1070.3247330091.

The spelling of 1226158699 in words is "one billion, two hundred twenty-six million, one hundred fifty-eight thousand, six hundred ninety-nine".