1963426 has 4 divisors (see below), whose sum is σ = 2945142. Its totient is φ = 981712.

The previous prime is 1963411. The next prime is 1963433. The reversal of 1963426 is 6243691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1962801 + 625 = 1401^2 + 25^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490855 + ... + 490858.

2^1963426 is an apocalyptic number.

1963426 is a deficient number, since it is larger than the sum of its proper divisors (981716).

1963426 is an equidigital number, since it uses as much as digits as its factorization.

1963426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981715.

The product of its digits is 7776, while the sum is 31.

The square root of 1963426 is about 1401.2230372071. The cubic root of 1963426 is about 125.2193694578.

The spelling of 1963426 in words is "one million, nine hundred sixty-three thousand, four hundred twenty-six".