1178938849 has 4 divisors (see below), whose sum is σ = 1286115120. Its totient is φ = 1071762580.

The previous prime is 1178938781. The next prime is 1178938861. The reversal of 1178938849 is 9488398711.

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.

It is a cyclic number.

It is not a de Polignac number, because 1178938849 - 2²¹ = 1176841697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1178938793 and 1178938802.

It is not an unprimeable number, because it can be changed into a prime (1178938549) 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, 53588119 + ... + 53588140.

It is an arithmetic number, because the mean of its divisors is an integer number (321528780).

Almost surely, 2^1178938849 is an apocalyptic number.

It is an amenable number.

1178938849 is a deficient number, since it is larger than the sum of its proper divisors (107176271).

1178938849 is a wasteful number, since it uses less digits than its factorization.

1178938849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107176270.

The product of its digits is 3483648, while the sum is 58.

The square root of 1178938849 is about 34335.6789506193. The cubic root of 1178938849 is about 1056.4049471508.

The spelling of 1178938849 in words is "one billion, one hundred seventy-eight million, nine hundred thirty-eight thousand, eight hundred forty-nine".