2091454123 has 8 divisors (see below), whose sum is σ = 2286673200. Its totient is φ = 1897082880.

The previous prime is 2091454117. The next prime is 2091454133. The reversal of 2091454123 is 3214541902.

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

It is not a de Polignac number, because 2091454123 - 2¹³ = 2091445931 is a prime.

It is a super-2 number, since 2×2091454123² = 8748360697227398258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091454133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206790 + ... + 216667.

It is an arithmetic number, because the mean of its divisors is an integer number (285834150).

Almost surely, 2^2091454123 is an apocalyptic number.

2091454123 is a deficient number, since it is larger than the sum of its proper divisors (195219077).

2091454123 is a wasteful number, since it uses less digits than its factorization.

2091454123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423917.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2091454123 is about 45732.4187311364. The cubic root of 2091454123 is about 1278.8397125034.

The spelling of 2091454123 in words is "two billion, ninety-one million, four hundred fifty-four thousand, one hundred twenty-three".