1123453968 has 320 divisors, whose sum is σ = 3791424000. Its totient is φ = 284497920.

The previous prime is 1123453957. The next prime is 1123453973. The reversal of 1123453968 is 8693543211.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6206838 + ... + 6207018.

It is an arithmetic number, because the mean of its divisors is an integer number (11848200).

Almost surely, 2^1123453968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123453968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895712000).

1123453968 is an abundant number, since it is smaller than the sum of its proper divisors (2667970032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123453968 is a wasteful number, since it uses less digits than its factorization.

1123453968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 235 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 1123453968 is about 33517.9648546865. The cubic root of 1123453968 is about 1039.5652670195.

The spelling of 1123453968 in words is "one billion, one hundred twenty-three million, four hundred fifty-three thousand, nine hundred sixty-eight".