2091789256 has 32 divisors (see below), whose sum is σ = 4062036600. Its totient is φ = 1008663040.

The previous prime is 2091789253. The next prime is 2091789277. The reversal of 2091789256 is 6529871902.

It can be written as a sum of positive squares in 4 ways, for example, as 1921068900 + 170720356 = 43830^2 + 13066^2 .

It is not an unprimeable number, because it can be changed into a prime (2091789253) 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, 216366 + ... + 225826.

Almost surely, 2^2091789256 is an apocalyptic number.

It is an amenable number.

2091789256 is a deficient number, since it is larger than the sum of its proper divisors (1970247344).

2091789256 is a wasteful number, since it uses less digits than its factorization.

2091789256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10449 (or 10445 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 2091789256 is about 45736.0826481674. The cubic root of 2091789256 is about 1278.9080156192.

The spelling of 2091789256 in words is "two billion, ninety-one million, seven hundred eighty-nine thousand, two hundred fifty-six".