2105483989 has 12 divisors (see below), whose sum is σ = 2495451564. Its totient is φ = 1770647424.

The previous prime is 2105483969. The next prime is 2105484011. The reversal of 2105483989 is 9893845012.

It can be written as a sum of positive squares in 2 ways, for example, as 1819704964 + 285779025 = 42658^2 + 16905^2 .

It is not a de Polignac number, because 2105483989 - 2¹⁵ = 2105451221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105483959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402772 + ... + 407965.

It is an arithmetic number, because the mean of its divisors is an integer number (207954297).

Almost surely, 2^2105483989 is an apocalyptic number.

It is an amenable number.

2105483989 is a deficient number, since it is larger than the sum of its proper divisors (389967575).

2105483989 is an equidigital number, since it uses as much as digits as its factorization.

2105483989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810804 (or 810797 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 2105483989 is about 45885.5531621882. The cubic root of 2105483989 is about 1281.6929075022.

The spelling of 2105483989 in words is "two billion, one hundred five million, four hundred eighty-three thousand, nine hundred eighty-nine".