1123988481 has 144 divisors (see below), whose sum is σ = 2181251072. Its totient is φ = 565820640.

The previous prime is 1123988471. The next prime is 1123988497. The reversal of 1123988481 is 1848893211.

It is not a de Polignac number, because 1123988481 - 2¹⁰ = 1123987457 is a prime.

It is a super-2 number, since 2×1123988481² = 2526700210841374722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123988471) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8850240 + ... + 8850366.

Almost surely, 2^1123988481 is an apocalyptic number.

1123988481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123988481 is a deficient number, since it is larger than the sum of its proper divisors (1057262591).

1123988481 is a wasteful number, since it uses less digits than its factorization.

1123988481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 191 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 1123988481 is about 33525.9374365580. The cubic root of 1123988481 is about 1039.7301077888.

The spelling of 1123988481 in words is "one billion, one hundred twenty-three million, nine hundred eighty-eight thousand, four hundred eighty-one".