2091854831 has 8 divisors (see below), whose sum is σ = 2285103744. Its totient is φ = 1899119320.

The previous prime is 2091854759. The next prime is 2091854857. The reversal of 2091854831 is 1384581902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2091854831 is a prime.

It is a super-2 number, since 2×2091854831² = 8751713267956077122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091854881) 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, 119801 + ... + 136146.

It is an arithmetic number, because the mean of its divisors is an integer number (285637968).

Almost surely, 2^2091854831 is an apocalyptic number.

2091854831 is a deficient number, since it is larger than the sum of its proper divisors (193248913).

2091854831 is a wasteful number, since it uses less digits than its factorization.

2091854831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256701.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 2091854831 is about 45736.7995272953. The cubic root of 2091854831 is about 1278.9213795398.

The spelling of 2091854831 in words is "two billion, ninety-one million, eight hundred fifty-four thousand, eight hundred thirty-one".