1962638 has 4 divisors (see below), whose sum is σ = 2943960. Its totient is φ = 981318.

The previous prime is 1962637. The next prime is 1962661. The reversal of 1962638 is 8362691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8362691 = 17 ⋅491923.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1962598 and 1962607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1962637) by changing a digit.

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, 490658 + ... + 490661.

It is an arithmetic number, because the mean of its divisors is an integer number (735990).

2^1962638 is an apocalyptic number.

1962638 is a deficient number, since it is larger than the sum of its proper divisors (981322).

1962638 is an equidigital number, since it uses as much as digits as its factorization.

1962638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981321.

The product of its digits is 15552, while the sum is 35.

The square root of 1962638 is about 1400.9418260585. The cubic root of 1962638 is about 125.2026153986.

The spelling of 1962638 in words is "one million, nine hundred sixty-two thousand, six hundred thirty-eight".