1199743056 has 160 divisors (see below), whose sum is σ = 3614292480. Its totient is φ = 380588544.

The previous prime is 1199743037. The next prime is 1199743117. The reversal of 1199743056 is 6503479911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 750450 + ... + 752046.

It is an arithmetic number, because the mean of its divisors is an integer number (22589328).

Almost surely, 2^1199743056 is an apocalyptic number.

1199743056 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 1199743056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1807146240).

1199743056 is an abundant number, since it is smaller than the sum of its proper divisors (2414549424).

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

1199743056 is a wasteful number, since it uses less digits than its factorization.

1199743056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1199743056 is about 34637.3072856422. The cubic root of 1199743056 is about 1062.5827182843.

The spelling of 1199743056 in words is "one billion, one hundred ninety-nine million, seven hundred forty-three thousand, fifty-six".