1229115673 has 4 divisors (see below), whose sum is σ = 1245952948. Its totient is φ = 1212278400.

The previous prime is 1229115661. The next prime is 1229115707. The reversal of 1229115673 is 3765119221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235100889 + 994014784 = 15333^2 + 31528^2 .

It is a cyclic number.

It is not a de Polignac number, because 1229115673 - 2⁹ = 1229115161 is a prime.

It is a super-2 number, since 2×1229115673² = 3021450675228485858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229115473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8418528 + ... + 8418673.

It is an arithmetic number, because the mean of its divisors is an integer number (311488237).

Almost surely, 2^1229115673 is an apocalyptic number.

It is an amenable number.

1229115673 is a deficient number, since it is larger than the sum of its proper divisors (16837275).

1229115673 is an equidigital number, since it uses as much as digits as its factorization.

1229115673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16837274.

The product of its digits is 22680, while the sum is 37.

The square root of 1229115673 is about 35058.7460272041. The cubic root of 1229115673 is about 1071.1844318565.

The spelling of 1229115673 in words is "one billion, two hundred twenty-nine million, one hundred fifteen thousand, six hundred seventy-three".