1005001100 has 36 divisors (see below), whose sum is σ = 2275677264. Its totient is φ = 384521280.

The previous prime is 1005001099. The next prime is 1005001159. The reversal of 1005001100 is 11005001.

It is a happy number.

It is a super-2 number, since 2×1005001100² = 2020054422002420000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216179 + ... + 220778.

Almost surely, 2^1005001100 is an apocalyptic number.

1005001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005001100 is an abundant number, since it is smaller than the sum of its proper divisors (1270676164).

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

1005001100 is a wasteful number, since it uses less digits than its factorization.

1005001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436994 (or 436987 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 1005001100 is about 31701.7523174982. The cubic root of 1005001100 is about 1001.6642620287.

Adding to 1005001100 its reverse (11005001), we get a palindrome (1016006101).

The spelling of 1005001100 in words is "one billion, five million, one thousand, one hundred".