1936642 has 4 divisors (see below), whose sum is σ = 2904966. Its totient is φ = 968320.

The previous prime is 1936637. The next prime is 1936643. The reversal of 1936642 is 2466391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2466391 = 31 ⋅79561.

It can be written as a sum of positive squares in only one way, i.e., 1142761 + 793881 = 1069^2 + 891^2 .

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 not an unprimeable number, because it can be changed into a prime (1936643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484159 + ... + 484162.

2^1936642 is an apocalyptic number.

1936642 is a deficient number, since it is larger than the sum of its proper divisors (968324).

1936642 is an equidigital number, since it uses as much as digits as its factorization.

1936642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968323.

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

The square root of 1936642 is about 1391.6328538806. The cubic root of 1936642 is about 124.6473688121.

The spelling of 1936642 in words is "one million, nine hundred thirty-six thousand, six hundred forty-two".