2108428351 has 4 divisors (see below), whose sum is σ = 2148210072. Its totient is φ = 2068646632.

The previous prime is 2108428249. The next prime is 2108428367. The reversal of 2108428351 is 1538248012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2108428351 - 2¹¹ = 2108426303 is a prime.

It is a super-2 number, since 2×2108428351² = 8890940222601158402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108420351) 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 3 ways as a sum of consecutive naturals, for example, 19890781 + ... + 19890886.

It is an arithmetic number, because the mean of its divisors is an integer number (537052518).

Almost surely, 2^2108428351 is an apocalyptic number.

2108428351 is a deficient number, since it is larger than the sum of its proper divisors (39781721).

2108428351 is an equidigital number, since it uses as much as digits as its factorization.

2108428351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39781720.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 2108428351 is about 45917.6257117025. The cubic root of 2108428351 is about 1282.2900798019.

The spelling of 2108428351 in words is "two billion, one hundred eight million, four hundred twenty-eight thousand, three hundred fifty-one".