2091256654 has 8 divisors (see below), whose sum is σ = 3144372840. Its totient is φ = 1043132376.

The previous prime is 2091256633. The next prime is 2091256663. The reversal of 2091256654 is 4566521902.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246929 + ... + 1248604.

It is an arithmetic number, because the mean of its divisors is an integer number (393046605).

Almost surely, 2^2091256654 is an apocalyptic number.

2091256654 is a deficient number, since it is larger than the sum of its proper divisors (1053116186).

2091256654 is a wasteful number, since it uses less digits than its factorization.

2091256654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495954.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 2091256654 is about 45730.2597193587. The cubic root of 2091256654 is about 1278.7994631310.

The spelling of 2091256654 in words is "two billion, ninety-one million, two hundred fifty-six thousand, six hundred fifty-four".