1157788344 has 64 divisors (see below), whose sum is σ = 2999664000. Its totient is φ = 371952000.

The previous prime is 1157788343. The next prime is 1157788361. The reversal of 1157788344 is 4438877511.

It is a junction number, because it is equal to n+sod(n) for n = 1157788293 and 1157788302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157788343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513219 + ... + 515469.

It is an arithmetic number, because the mean of its divisors is an integer number (46869750).

Almost surely, 2^1157788344 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 1157788344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499832000).

1157788344 is an abundant number, since it is smaller than the sum of its proper divisors (1841875656).

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

1157788344 is a wasteful number, since it uses less digits than its factorization.

1157788344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028 (or 3024 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 1157788344 is about 34026.2890130558. The cubic root of 1157788344 is about 1050.0493836184.

The spelling of 1157788344 in words is "one billion, one hundred fifty-seven million, seven hundred eighty-eight thousand, three hundred forty-four".