1121804168 has 8 divisors (see below), whose sum is σ = 2103382830. Its totient is φ = 560902080.

The previous prime is 1121804113. The next prime is 1121804171. The reversal of 1121804168 is 8614081211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 690743524 + 431060644 = 26282^2 + 20762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70112753 + ... + 70112768.

Almost surely, 2^1121804168 is an apocalyptic number.

It is an amenable number.

1121804168 is a deficient number, since it is larger than the sum of its proper divisors (981578662).

1121804168 is a wasteful number, since it uses less digits than its factorization.

1121804168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140225527 (or 140225523 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 1121804168 is about 33493.3451300404. The cubic root of 1121804168 is about 1039.0561481043.

Adding to 1121804168 its reverse (8614081211), we get a palindrome (9735885379).

The spelling of 1121804168 in words is "one billion, one hundred twenty-one million, eight hundred four thousand, one hundred sixty-eight".