2064451894 has 8 divisors (see below), whose sum is σ = 3231316080. Its totient is φ = 987346536.

The previous prime is 2064451891. The next prime is 2064451951. The reversal of 2064451894 is 4981544602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2064451894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064451891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22439649 + ... + 22439740.

It is an arithmetic number, because the mean of its divisors is an integer number (403914510).

Almost surely, 2^2064451894 is an apocalyptic number.

2064451894 is a deficient number, since it is larger than the sum of its proper divisors (1166864186).

2064451894 is a wasteful number, since it uses less digits than its factorization.

2064451894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44879414.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 2064451894 is about 45436.2398752362. The cubic root of 2064451894 is about 1273.3122652295.

It can be divided in two parts, 206 and 4451894, that added together give a square (4452100 = 2110²).

The spelling of 2064451894 in words is "two billion, sixty-four million, four hundred fifty-one thousand, eight hundred ninety-four".