2643492446 has 16 divisors (see below), whose sum is σ = 4534328544. Its totient is φ = 1132268544.

The previous prime is 2643492443. The next prime is 2643492457. The reversal of 2643492446 is 6442943462.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2643492397 and 2643492406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643492443) 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, 29315 + ... + 78398.

It is an arithmetic number, because the mean of its divisors is an integer number (283395534).

Almost surely, 2^2643492446 is an apocalyptic number.

2643492446 is a deficient number, since it is larger than the sum of its proper divisors (1890836098).

2643492446 is a wasteful number, since it uses less digits than its factorization.

2643492446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109475.

The product of its digits is 995328, while the sum is 44.

The square root of 2643492446 is about 51414.9049012054. The cubic root of 2643492446 is about 1382.6938289669.

The spelling of 2643492446 in words is "two billion, six hundred forty-three million, four hundred ninety-two thousand, four hundred forty-six".