2100907986 has 8 divisors (see below), whose sum is σ = 4201815984. Its totient is φ = 700302660.

The previous prime is 2100907973. The next prime is 2100907997. The reversal of 2100907986 is 6897090012.

It is a sphenic number, since it is the product of 3 distinct primes.

2100907986 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175075660 + ... + 175075671.

It is an arithmetic number, because the mean of its divisors is an integer number (525226998).

Almost surely, 2^2100907986 is an apocalyptic number.

2100907986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2100907986 is a wasteful number, since it uses less digits than its factorization.

2100907986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350151336.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 2100907986 is about 45835.6628183776. The cubic root of 2100907986 is about 1280.7637015610.

Adding to 2100907986 its reverse (6897090012), we get a palindrome (8997997998).

The spelling of 2100907986 in words is "two billion, one hundred million, nine hundred seven thousand, nine hundred eighty-six".