1119561456 has 120 divisors (see below), whose sum is σ = 3173249280. Its totient is φ = 339925248.

The previous prime is 1119561451. The next prime is 1119561473. The reversal of 1119561456 is 6541659111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1119561451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 639975 + ... + 641721.

It is an arithmetic number, because the mean of its divisors is an integer number (26443744).

Almost surely, 2^1119561456 is an apocalyptic number.

1119561456 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 1119561456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586624640).

1119561456 is an abundant number, since it is smaller than the sum of its proper divisors (2053687824).

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

1119561456 is a wasteful number, since it uses less digits than its factorization.

1119561456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863 (or 1844 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The square root of 1119561456 is about 33459.8484156758. The cubic root of 1119561456 is about 1038.3632587983.

The spelling of 1119561456 in words is "one billion, one hundred nineteen million, five hundred sixty-one thousand, four hundred fifty-six".