1945882 has 4 divisors (see below), whose sum is σ = 2918826. Its totient is φ = 972940.

The previous prime is 1945873. The next prime is 1945883. The reversal of 1945882 is 2885491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2885491 = 7 ⋅412213.

It can be written as a sum of positive squares in only one way, i.e., 1320201 + 625681 = 1149^2 + 791^2 .

It is not an unprimeable number, because it can be changed into a prime (1945883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486469 + ... + 486472.

2^1945882 is an apocalyptic number.

1945882 is a deficient number, since it is larger than the sum of its proper divisors (972944).

1945882 is an equidigital number, since it uses as much as digits as its factorization.

1945882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972943.

The product of its digits is 23040, while the sum is 37.

The square root of 1945882 is about 1394.9487445781. The cubic root of 1945882 is about 124.8452912673.

The spelling of 1945882 in words is "one million, nine hundred forty-five thousand, eight hundred eighty-two".