1982019 has 8 divisors (see below), whose sum is σ = 2846032. Its totient is φ = 1219680.

The previous prime is 1982011. The next prime is 1982021. The reversal of 1982019 is 9102891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1982019 - 2³ = 1982011 is a prime.

It is a super-2 number, since 2×1982019² = 7856798632722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25372 + ... + 25449.

It is an arithmetic number, because the mean of its divisors is an integer number (355754).

2^1982019 is an apocalyptic number.

1982019 is a deficient number, since it is larger than the sum of its proper divisors (864013).

1982019 is a wasteful number, since it uses less digits than its factorization.

1982019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50837.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1982019 is about 1407.8419655629. The cubic root of 1982019 is about 125.6133904274.

The spelling of 1982019 in words is "one million, nine hundred eighty-two thousand, nineteen".