2131854505 has 16 divisors (see below), whose sum is σ = 2791718784. Its totient is φ = 1549924480.

The previous prime is 2131854499. The next prime is 2131854577. The reversal of 2131854505 is 5054581312.

It is not a de Polignac number, because 2131854505 - 2⁹ = 2131853993 is a prime.

It is a Duffinian 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, 259572 + ... + 267658.

It is an arithmetic number, because the mean of its divisors is an integer number (174482424).

Almost surely, 2^2131854505 is an apocalyptic number.

It is an amenable number.

2131854505 is a deficient number, since it is larger than the sum of its proper divisors (659864279).

2131854505 is a wasteful number, since it uses less digits than its factorization.

2131854505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 2131854505 is about 46172.0099735760. The cubic root of 2131854505 is about 1287.0216538283.

The spelling of 2131854505 in words is "two billion, one hundred thirty-one million, eight hundred fifty-four thousand, five hundred five".