1229056173 has 40 divisors (see below), whose sum is σ = 1952010720. Its totient is φ = 768463200.

The previous prime is 1229056117. The next prime is 1229056189. The reversal of 1229056173 is 3716509221.

1229056173 is a `hidden beast` number, since 1 + 2 + 2 + 90 + 561 + 7 + 3 = 666.

It is not a de Polignac number, because 1229056173 - 2⁶ = 1229056109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229057173) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 151486 + ... + 159392.

It is an arithmetic number, because the mean of its divisors is an integer number (48800268).

Almost surely, 2^1229056173 is an apocalyptic number.

It is an amenable number.

1229056173 is a deficient number, since it is larger than the sum of its proper divisors (722954547).

1229056173 is a wasteful number, since it uses less digits than its factorization.

1229056173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039 (or 8030 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1229056173 is about 35057.8974412328. The cubic root of 1229056173 is about 1071.1671466642.

The spelling of 1229056173 in words is "one billion, two hundred twenty-nine million, fifty-six thousand, one hundred seventy-three".