2106734939 has 4 divisors (see below), whose sum is σ = 2158118760. Its totient is φ = 2055351120.

The previous prime is 2106734923. The next prime is 2106734963. The reversal of 2106734939 is 9394376012.

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 2106734939 - 2⁴ = 2106734923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2106734939.

It is not an unprimeable number, because it can be changed into a prime (2106734969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25691849 + ... + 25691930.

It is an arithmetic number, because the mean of its divisors is an integer number (539529690).

Almost surely, 2^2106734939 is an apocalyptic number.

2106734939 is a deficient number, since it is larger than the sum of its proper divisors (51383821).

2106734939 is an equidigital number, since it uses as much as digits as its factorization.

2106734939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51383820.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 2106734939 is about 45899.1823347650. The cubic root of 2106734939 is about 1281.9466917978.

The spelling of 2106734939 in words is "two billion, one hundred six million, seven hundred thirty-four thousand, nine hundred thirty-nine".