1091828743 has 16 divisors (see below), whose sum is σ = 1150531200. Its totient is φ = 1034691840.

The previous prime is 1091828741. The next prime is 1091828747. The reversal of 1091828743 is 3478281901.

It is a cyclic number.

It is not a de Polignac number, because 1091828743 - 2¹ = 1091828741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091828743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091828741) 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, 413355 + ... + 415987.

It is an arithmetic number, because the mean of its divisors is an integer number (71908200).

Almost surely, 2^1091828743 is an apocalyptic number.

1091828743 is a deficient number, since it is larger than the sum of its proper divisors (58702457).

1091828743 is a wasteful number, since it uses less digits than its factorization.

1091828743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1091828743 is about 33042.8319458245. The cubic root of 1091828743 is about 1029.7176915058.

The spelling of 1091828743 in words is "one billion, ninety-one million, eight hundred twenty-eight thousand, seven hundred forty-three".