1119257640 has 96 divisors (see below), whose sum is σ = 3642748200. Its totient is φ = 298045440.

The previous prime is 1119257609. The next prime is 1119257651. The reversal of 1119257640 is 467529111.

1119257640 is a `hidden beast` number, since 1 + 1 + 1 + 9 + 2 + 5 + 7 + 640 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 457018884 + 662238756 = 21378^2 + 25734^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1119257595 and 1119257604.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 315396 + ... + 318924.

Almost surely, 2^1119257640 is an apocalyptic number.

1119257640 is a gapful number since it is divisible by the number (10) 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 1119257640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821374100).

1119257640 is an abundant number, since it is smaller than the sum of its proper divisors (2523490560).

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

1119257640 is a wasteful number, since it uses less digits than its factorization.

1119257640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427 (or 4420 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1119257640 is about 33455.3080990147. The cubic root of 1119257640 is about 1038.2693232336.

The spelling of 1119257640 in words is "one billion, one hundred nineteen million, two hundred fifty-seven thousand, six hundred forty".