1075407749 has 16 divisors (see below), whose sum is σ = 1176203952. Its totient is φ = 977246208.

The previous prime is 1075407731. The next prime is 1075407761. The reversal of 1075407749 is 9477045701.

It can be written as a sum of positive squares in 8 ways, for example, as 748225 + 1074659524 = 865^2 + 32782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1075407749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075407449) 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, 979769 + ... + 980865.

It is an arithmetic number, because the mean of its divisors is an integer number (73512747).

Almost surely, 2^1075407749 is an apocalyptic number.

It is an amenable number.

1075407749 is a deficient number, since it is larger than the sum of its proper divisors (100796203).

1075407749 is a wasteful number, since it uses less digits than its factorization.

1075407749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 1075407749 is about 32793.4101459424. The cubic root of 1075407749 is about 1024.5293096458.

The spelling of 1075407749 in words is "one billion, seventy-five million, four hundred seven thousand, seven hundred forty-nine".