1115645417 has 6 divisors (see below), whose sum is σ = 1181417454. Its totient is φ = 1049889600.

The previous prime is 1115645407. The next prime is 1115645431. The reversal of 1115645417 is 7145465111.

It can be written as a sum of positive squares in 3 ways, for example, as 1037870656 + 77774761 = 32216^2 + 8819^2 .

It is not a de Polignac number, because 1115645417 - 2⁶ = 1115645353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115645407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133667 + ... + 141767.

It is an arithmetic number, because the mean of its divisors is an integer number (196902909).

Almost surely, 2^1115645417 is an apocalyptic number.

1115645417 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1115645417 is a deficient number, since it is larger than the sum of its proper divisors (65772037).

1115645417 is an frugal number, since it uses more digits than its factorization.

1115645417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16219 (or 8118 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 1115645417 is about 33401.2786731287. The cubic root of 1115645417 is about 1037.1511707151.

The spelling of 1115645417 in words is "one billion, one hundred fifteen million, six hundred forty-five thousand, four hundred seventeen".