1000100955 has 32 divisors (see below), whose sum is σ = 1829952000. Its totient is φ = 456890112.

The previous prime is 1000100911. The next prime is 1000100957. The reversal of 1000100955 is 5590010001.

It is a happy number.

It is not a de Polignac number, because 1000100955 - 2¹⁰ = 1000099931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1000100957) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 281631 + ... + 285159.

It is an arithmetic number, because the mean of its divisors is an integer number (57186000).

Almost surely, 2^1000100955 is an apocalyptic number.

1000100955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1000100955 is a deficient number, since it is larger than the sum of its proper divisors (829851045).

1000100955 is a wasteful number, since it uses less digits than its factorization.

1000100955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6243.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 1000100955 is about 31624.3728001047. The cubic root of 1000100955 is about 1000.0336505343.

Adding to 1000100955 its reverse (5590010001), we get a palindrome (6590110956).

The spelling of 1000100955 in words is "one billion, one hundred thousand, nine hundred fifty-five".