2646451894 has 16 divisors (see below), whose sum is σ = 4068837936. Its totient is φ = 1290564000.

The previous prime is 2646451891. The next prime is 2646451933. The reversal of 2646451894 is 4981546462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646451891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84237 + ... + 111304.

It is an arithmetic number, because the mean of its divisors is an integer number (254302371).

Almost surely, 2^2646451894 is an apocalyptic number.

2646451894 is a deficient number, since it is larger than the sum of its proper divisors (1422386042).

2646451894 is a wasteful number, since it uses less digits than its factorization.

2646451894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195711.

The product of its digits is 1658880, while the sum is 49.

The square root of 2646451894 is about 51443.6769098011. The cubic root of 2646451894 is about 1383.2096219298.

The spelling of 2646451894 in words is "two billion, six hundred forty-six million, four hundred fifty-one thousand, eight hundred ninety-four".