1982403797 has 8 divisors (see below), whose sum is σ = 2221072032. Its totient is φ = 1753477200.

The previous prime is 1982403749. The next prime is 1982403799. The reversal of 1982403797 is 7973042891.

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 1982403797 - 2⁶ = 1982403733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982403799) 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, 2434979 + ... + 2435792.

It is an arithmetic number, because the mean of its divisors is an integer number (277634004).

Almost surely, 2^1982403797 is an apocalyptic number.

It is an amenable number.

1982403797 is a deficient number, since it is larger than the sum of its proper divisors (238668235).

1982403797 is a wasteful number, since it uses less digits than its factorization.

1982403797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870819.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 1982403797 is about 44524.1933896618. The cubic root of 1982403797 is about 1256.2151892799.

The spelling of 1982403797 in words is "one billion, nine hundred eighty-two million, four hundred three thousand, seven hundred ninety-seven".