1173902993 has 4 divisors (see below), whose sum is σ = 1173971520. Its totient is φ = 1173834468.

The previous prime is 1173902987. The next prime is 1173903001. The reversal of 1173902993 is 3992093711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3992093711 = 25849 ⋅154439.

It is a cyclic number.

It is not a de Polignac number, because 1173902993 - 2²⁴ = 1157125777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1173902903) 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, 16796 + ... + 51282.

It is an arithmetic number, because the mean of its divisors is an integer number (293492880).

Almost surely, 2^1173902993 is an apocalyptic number.

It is an amenable number.

1173902993 is a deficient number, since it is larger than the sum of its proper divisors (68527).

1173902993 is an equidigital number, since it uses as much as digits as its factorization.

1173902993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68526.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1173902993 is about 34262.2677737478. The cubic root of 1173902993 is about 1054.8986502223.

The spelling of 1173902993 in words is "one billion, one hundred seventy-three million, nine hundred two thousand, nine hundred ninety-three".