100308945 has 16 divisors (see below), whose sum is σ = 175084992. Its totient is φ = 48634560.

The previous prime is 100308937. The next prime is 100308953. The reversal of 100308945 is 549803001.

It is an interprime number because it is at equal distance from previous prime (100308937) and next prime (100308953).

It is not a de Polignac number, because 100308945 - 2³ = 100308937 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 303802 + ... + 304131.

It is an arithmetic number, because the mean of its divisors is an integer number (10942812).

Almost surely, 2^100308945 is an apocalyptic number.

100308945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100308945 is a deficient number, since it is larger than the sum of its proper divisors (74776047).

100308945 is a wasteful number, since it uses less digits than its factorization.

100308945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607952.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 100308945 is about 10015.4353375178. The cubic root of 100308945 is about 464.6363905076.

The spelling of 100308945 in words is "one hundred million, three hundred eight thousand, nine hundred forty-five".