1100006145 has 60 divisors (see below), whose sum is σ = 2224542996. Its totient is φ = 502810560.

The previous prime is 1100006143. The next prime is 1100006183. The reversal of 1100006145 is 5416000011.

It can be written as a sum of positive squares in 2 ways, for example, as 525876624 + 574129521 = 22932^2 + 23961^2 .

It is not a de Polignac number, because 1100006145 - 2¹ = 1100006143 is a prime.

It is a super-2 number, since 2×1100006145² = 2420027038075522050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1100006143) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 102955 + ... + 113135.

Almost surely, 2^1100006145 is an apocalyptic number.

1100006145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1100006145 is an abundant number, since it is smaller than the sum of its proper divisors (1124536851).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100006145 is an equidigital number, since it uses as much as digits as its factorization.

1100006145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10220 (or 10196 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1100006145 is about 33166.3405427852. The cubic root of 1100006145 is about 1032.2820376835.

Adding to 1100006145 its reverse (5416000011), we get a palindrome (6516006156).

The spelling of 1100006145 in words is "one billion, one hundred million, six thousand, one hundred forty-five".