2106943487 has 4 divisors (see below), whose sum is σ = 2298483816. Its totient is φ = 1915403160.

The previous prime is 2106943469. The next prime is 2106943493. The reversal of 2106943487 is 7843496012.

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

It is a de Polignac number, because none of the positive numbers 2^k-2106943487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106943417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95770148 + ... + 95770169.

It is an arithmetic number, because the mean of its divisors is an integer number (574620954).

Almost surely, 2^2106943487 is an apocalyptic number.

2106943487 is a deficient number, since it is larger than the sum of its proper divisors (191540329).

2106943487 is a wasteful number, since it uses less digits than its factorization.

2106943487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191540328.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2106943487 is about 45901.4540837216. The cubic root of 2106943487 is about 1281.9889908380.

The spelling of 2106943487 in words is "two billion, one hundred six million, nine hundred forty-three thousand, four hundred eighty-seven".