2129493085 has 16 divisors (see below), whose sum is σ = 2619207360. Its totient is φ = 1661184000.

The previous prime is 2129493073. The next prime is 2129493127. The reversal of 2129493085 is 5803949212.

It is not a de Polignac number, because 2129493085 - 2⁷ = 2129492957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125085 + ... + 141085.

It is an arithmetic number, because the mean of its divisors is an integer number (163700460).

Almost surely, 2^2129493085 is an apocalyptic number.

It is an amenable number.

2129493085 is a deficient number, since it is larger than the sum of its proper divisors (489714275).

2129493085 is a wasteful number, since it uses less digits than its factorization.

2129493085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16668.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 2129493085 is about 46146.4309020752. The cubic root of 2129493085 is about 1286.5462740569.

The spelling of 2129493085 in words is "two billion, one hundred twenty-nine million, four hundred ninety-three thousand, eighty-five".