1229858473 has 2 divisors, whose sum is σ = 1229858474. Its totient is φ = 1229858472.

The previous prime is 1229858423. The next prime is 1229858479. The reversal of 1229858473 is 3748589221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 634888809 + 594969664 = 25197^2 + 24392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1229858473 - 2²⁵ = 1196304041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1229858479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614929236 + 614929237.

It is an arithmetic number, because the mean of its divisors is an integer number (614929237).

Almost surely, 2^1229858473 is an apocalyptic number.

It is an amenable number.

1229858473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229858473 is an equidigital number, since it uses as much as digits as its factorization.

1229858473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 1229858473 is about 35069.3380747342. The cubic root of 1229858473 is about 1071.4001738412.

The spelling of 1229858473 in words is "one billion, two hundred twenty-nine million, eight hundred fifty-eight thousand, four hundred seventy-three".