2106315643 has 8 divisors (see below), whose sum is σ = 2210042016. Its totient is φ = 2003601600.

The previous prime is 2106315637. The next prime is 2106315671. The reversal of 2106315643 is 3465136012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106315643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106315683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248818 + ... + 257143.

It is an arithmetic number, because the mean of its divisors is an integer number (276255252).

Almost surely, 2^2106315643 is an apocalyptic number.

2106315643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2106315643 is a deficient number, since it is larger than the sum of its proper divisors (103726373).

2106315643 is a wasteful number, since it uses less digits than its factorization.

2106315643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506165.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2106315643 is about 45894.6145315548. The cubic root of 2106315643 is about 1281.8616390504.

The spelling of 2106315643 in words is "two billion, one hundred six million, three hundred fifteen thousand, six hundred forty-three".