1649982 has 16 divisors (see below), whose sum is σ = 3370752. Its totient is φ = 538200.

The previous prime is 1649981. The next prime is 1649987. The reversal of 1649982 is 2899461.

It is a self number, because there is not a number n which added to its sum of digits gives 1649982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649981) 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, 2644 + ... + 3207.

It is an arithmetic number, because the mean of its divisors is an integer number (210672).

2^1649982 is an apocalyptic number.

1649982 is an abundant number, since it is smaller than the sum of its proper divisors (1720770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649982 is a wasteful number, since it uses less digits than its factorization.

1649982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903.

The product of its digits is 31104, while the sum is 39.

The square root of 1649982 is about 1284.5162513569. The cubic root of 1649982 is about 118.1661453486.

The spelling of 1649982 in words is "one million, six hundred forty-nine thousand, nine hundred eighty-two".