1173055638 has 16 divisors (see below), whose sum is σ = 2347706880. Its totient is φ = 390752616.

The previous prime is 1173055627. The next prime is 1173055651. The reversal of 1173055638 is 8365503711.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1173055596 and 1173055605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56818 + ... + 74661.

It is an arithmetic number, because the mean of its divisors is an integer number (146731680).

Almost surely, 2^1173055638 is an apocalyptic number.

1173055638 is an abundant number, since it is smaller than the sum of its proper divisors (1174651242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1173055638 is a wasteful number, since it uses less digits than its factorization.

1173055638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132971.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 1173055638 is about 34249.8998246710. The cubic root of 1173055638 is about 1054.6447709803.

The spelling of 1173055638 in words is "one billion, one hundred seventy-three million, fifty-five thousand, six hundred thirty-eight".