1121634455 has 16 divisors (see below), whose sum is σ = 1360916640. Its totient is φ = 887367552.

The previous prime is 1121634439. The next prime is 1121634457. The reversal of 1121634455 is 5544361211.

It is a cyclic number.

It is not a de Polignac number, because 1121634455 - 2⁴ = 1121634439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121634457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377837 + ... + 380793.

It is an arithmetic number, because the mean of its divisors is an integer number (85057290).

Almost surely, 2^1121634455 is an apocalyptic number.

1121634455 is a deficient number, since it is larger than the sum of its proper divisors (239282185).

1121634455 is a wasteful number, since it uses less digits than its factorization.

1121634455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778.

The product of its digits is 14400, while the sum is 32.

The square root of 1121634455 is about 33490.8115010670. The cubic root of 1121634455 is about 1039.0037473275.

Adding to 1121634455 its reverse (5544361211), we get a palindrome (6665995666).

The spelling of 1121634455 in words is "one billion, one hundred twenty-one million, six hundred thirty-four thousand, four hundred fifty-five".