1982045699 has 8 divisors (see below), whose sum is σ = 1994434560. Its totient is φ = 1969671816.

The previous prime is 1982045669. The next prime is 1982045701. The reversal of 1982045699 is 9965402891.

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

It is a cyclic number.

It is not a de Polignac number, because 1982045699 - 2¹² = 1982041603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1982045699.

It is not an unprimeable number, because it can be changed into a prime (1982045669) 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, 381014 + ... + 386180.

It is an arithmetic number, because the mean of its divisors is an integer number (249304320).

Almost surely, 2^1982045699 is an apocalyptic number.

1982045699 is a deficient number, since it is larger than the sum of its proper divisors (12388861).

1982045699 is a wasteful number, since it uses less digits than its factorization.

1982045699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7489.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 1982045699 is about 44520.1718213216. The cubic root of 1982045699 is about 1256.1395445438.

The spelling of 1982045699 in words is "one billion, nine hundred eighty-two million, forty-five thousand, six hundred ninety-nine".