1051370665 has 8 divisors (see below), whose sum is σ = 1262781000. Its totient is φ = 840339072.

The previous prime is 1051370657. The next prime is 1051370689. The reversal of 1051370665 is 5660731501.

It can be written as a sum of positive squares in 4 ways, for example, as 100080016 + 951290649 = 10004^2 + 30843^2 .

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 1051370665 - 2³ = 1051370657 is a prime.

It is a super-2 number, since 2×1051370665² = 2210760550445084450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051370665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88540 + ... + 99709.

It is an arithmetic number, because the mean of its divisors is an integer number (157847625).

Almost surely, 2^1051370665 is an apocalyptic number.

It is an amenable number.

1051370665 is a deficient number, since it is larger than the sum of its proper divisors (211410335).

1051370665 is a wasteful number, since it uses less digits than its factorization.

1051370665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189371.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 1051370665 is about 32424.8464144397. The cubic root of 1051370665 is about 1016.8384308316.

The spelling of 1051370665 in words is "one billion, fifty-one million, three hundred seventy thousand, six hundred sixty-five".