1226153473 has 2 divisors, whose sum is σ = 1226153474. Its totient is φ = 1226153472.

The previous prime is 1226153459. The next prime is 1226153491. The reversal of 1226153473 is 3743516221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 762698689 + 463454784 = 27617^2 + 21528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226153473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226153443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613076736 + 613076737.

It is an arithmetic number, because the mean of its divisors is an integer number (613076737).

Almost surely, 2^1226153473 is an apocalyptic number.

It is an amenable number.

1226153473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226153473 is an equidigital number, since it uses as much as digits as its factorization.

1226153473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 1226153473 is about 35016.4743085308. The cubic root of 1226153473 is about 1070.3232123998.

Adding to 1226153473 its reverse (3743516221), we get a palindrome (4969669694).

The spelling of 1226153473 in words is "one billion, two hundred twenty-six million, one hundred fifty-three thousand, four hundred seventy-three".