1982362709 has 4 divisors (see below), whose sum is σ = 2068552416. Its totient is φ = 1896173004.

The previous prime is 1982362693. The next prime is 1982362717. The reversal of 1982362709 is 9072632891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1982362709 - 2⁴ = 1982362693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982362769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43094819 + ... + 43094864.

It is an arithmetic number, because the mean of its divisors is an integer number (517138104).

Almost surely, 2^1982362709 is an apocalyptic number.

It is an amenable number.

1982362709 is a deficient number, since it is larger than the sum of its proper divisors (86189707).

1982362709 is an equidigital number, since it uses as much as digits as its factorization.

1982362709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86189706.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 1982362709 is about 44523.7319752062. The cubic root of 1982362709 is about 1256.2065103003.

The spelling of 1982362709 in words is "one billion, nine hundred eighty-two million, three hundred sixty-two thousand, seven hundred nine".