1128071701 has 4 divisors (see below), whose sum is σ = 1143524812. Its totient is φ = 1112618592.

The previous prime is 1128071687. The next prime is 1128071713. The reversal of 1128071701 is 1071708211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 459073476 + 668998225 = 21426^2 + 25865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128071701 - 2¹⁹ = 1127547413 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 1128071701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128071201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7726446 + ... + 7726591.

It is an arithmetic number, because the mean of its divisors is an integer number (285881203).

Almost surely, 2^1128071701 is an apocalyptic number.

It is an amenable number.

1128071701 is a deficient number, since it is larger than the sum of its proper divisors (15453111).

1128071701 is an equidigital number, since it uses as much as digits as its factorization.

1128071701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453110.

The product of its (nonzero) digits is 784, while the sum is 28.

The square root of 1128071701 is about 33586.7786636349. The cubic root of 1128071701 is about 1040.9876284386.

Adding to 1128071701 its reverse (1071708211), we get a palindrome (2199779912).

The spelling of 1128071701 in words is "one billion, one hundred twenty-eight million, seventy-one thousand, seven hundred one".