1982690 has 16 divisors (see below), whose sum is σ = 3585600. Its totient is φ = 789360.

The previous prime is 1982681. The next prime is 1982713. The reversal of 1982690 is 962891.

It is a super-2 number, since 2×1982690² = 7862119272200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1982690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3011 + ... + 3609.

It is an arithmetic number, because the mean of its divisors is an integer number (224100).

2^1982690 is an apocalyptic number.

1982690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1982690 is a deficient number, since it is larger than the sum of its proper divisors (1602910).

1982690 is a wasteful number, since it uses less digits than its factorization.

1982690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1982690 is about 1408.0802533947. The cubic root of 1982690 is about 125.6275640344.

The spelling of 1982690 in words is "one million, nine hundred eighty-two thousand, six hundred ninety".