2086745816 has 32 divisors (see below), whose sum is σ = 3968616000. Its totient is φ = 1028491776.

The previous prime is 2086745719. The next prime is 2086745819. The reversal of 2086745816 is 6185476802.

2086745816 = T₄₃₁ + T₄₃₂ + ... + T₂₃₂₆.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086745819) 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, 445760 + ... + 450416.

It is an arithmetic number, because the mean of its divisors is an integer number (124019250).

Almost surely, 2^2086745816 is an apocalyptic number.

It is an amenable number.

2086745816 is a deficient number, since it is larger than the sum of its proper divisors (1881870184).

2086745816 is a wasteful number, since it uses less digits than its factorization.

2086745816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451 (or 5447 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2086745816 is about 45680.9130381607. The cubic root of 2086745816 is about 1277.8793449655.

The spelling of 2086745816 in words is "two billion, eighty-six million, seven hundred forty-five thousand, eight hundred sixteen".