1131963456 has 112 divisors (see below), whose sum is σ = 3395268800. Its totient is φ = 329951232.

The previous prime is 1131963451. The next prime is 1131963461. The reversal of 1131963456 is 6543691311.

It is an interprime number because it is at equal distance from previous prime (1131963451) and next prime (1131963461).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1131963451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35490 + ... + 59358.

It is an arithmetic number, because the mean of its divisors is an integer number (30314900).

Almost surely, 2^1131963456 is an apocalyptic number.

1131963456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131963456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697634400).

1131963456 is an abundant number, since it is smaller than the sum of its proper divisors (2263305344).

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

1131963456 is a wasteful number, since it uses less digits than its factorization.

1131963456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23916 (or 23906 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 1131963456 is about 33644.6645993091. The cubic root of 1131963456 is about 1042.1833617904.

The spelling of 1131963456 in words is "one billion, one hundred thirty-one million, nine hundred sixty-three thousand, four hundred fifty-six".