2809811091954 has 16 divisors (see below), whose sum is σ = 5622312310560. Its totient is φ = 936155342880.

The previous prime is 2809811091931. The next prime is 2809811092013. The reversal of 2809811091954 is 4591901189082.

2809811091954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2809811091894 and 2809811091903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112075032 + ... + 112100099.

It is an arithmetic number, because the mean of its divisors is an integer number (351394519410).

Almost surely, 2^{2809811091954} is an apocalyptic number.

2809811091954 is an abundant number, since it is smaller than the sum of its proper divisors (2812501218606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2809811091954 is a wasteful number, since it uses less digits than its factorization.

2809811091954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224177225.

The product of its (nonzero) digits is 1866240, while the sum is 57.

The spelling of 2809811091954 in words is "two trillion, eight hundred nine billion, eight hundred eleven million, ninety-one thousand, nine hundred fifty-four".