1128057617 has 8 divisors (see below), whose sum is σ = 1137656520. Its totient is φ = 1118499840.

The previous prime is 1128057613. The next prime is 1128057649. The reversal of 1128057617 is 7167508211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28206721 + 1099850896 = 5311^2 + 33164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1128057617 - 2² = 1128057613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128057611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46109 + ... + 66197.

It is an arithmetic number, because the mean of its divisors is an integer number (142207065).

Almost surely, 2^1128057617 is an apocalyptic number.

It is an amenable number.

1128057617 is a deficient number, since it is larger than the sum of its proper divisors (9598903).

1128057617 is a wasteful number, since it uses less digits than its factorization.

1128057617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20563.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 1128057617 is about 33586.5689971453. The cubic root of 1128057617 is about 1040.9832961695.

The spelling of 1128057617 in words is "one billion, one hundred twenty-eight million, fifty-seven thousand, six hundred seventeen".