1982219385 has 8 divisors (see below), whose sum is σ = 3171551040. Its totient is φ = 1057183664.

The previous prime is 1982219341. The next prime is 1982219399. The reversal of 1982219385 is 5839122891.

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 1982219385 - 2¹² = 1982215289 is a prime.

It is a Curzon number.

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, 66073965 + ... + 66073994.

It is an arithmetic number, because the mean of its divisors is an integer number (396443880).

Almost surely, 2^1982219385 is an apocalyptic number.

1982219385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1982219385 is a deficient number, since it is larger than the sum of its proper divisors (1189331655).

1982219385 is a wasteful number, since it uses less digits than its factorization.

1982219385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132147967.

The product of its digits is 311040, while the sum is 48.

The square root of 1982219385 is about 44522.1224224542. The cubic root of 1982219385 is about 1256.1762351678.

The spelling of 1982219385 in words is "one billion, nine hundred eighty-two million, two hundred nineteen thousand, three hundred eighty-five".