1915982 has 4 divisors (see below), whose sum is σ = 2873976. Its totient is φ = 957990.

The previous prime is 1915981. The next prime is 1915993. The reversal of 1915982 is 2895191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2895191 = 13 ⋅222707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478994 + ... + 478997.

It is an arithmetic number, because the mean of its divisors is an integer number (718494).

2^1915982 is an apocalyptic number.

1915982 is a deficient number, since it is larger than the sum of its proper divisors (957994).

1915982 is an equidigital number, since it uses as much as digits as its factorization.

1915982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957993.

The product of its digits is 6480, while the sum is 35.

The square root of 1915982 is about 1384.1900158576. The cubic root of 1915982 is about 124.2025392701.

The spelling of 1915982 in words is "one million, nine hundred fifteen thousand, nine hundred eighty-two".