1020219985 has 8 divisors (see below), whose sum is σ = 1224490176. Its totient is φ = 816025200.

The previous prime is 1020219979. The next prime is 1020220001. The reversal of 1020219985 is 5899120201.

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

It is not a de Polignac number, because 1020219985 - 2¹¹ = 1020217937 is a prime.

It is a Duffinian 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, 17182 + ... + 48328.

It is an arithmetic number, because the mean of its divisors is an integer number (153061272).

Almost surely, 2^1020219985 is an apocalyptic number.

It is an amenable number.

1020219985 is a deficient number, since it is larger than the sum of its proper divisors (204270191).

1020219985 is an equidigital number, since it uses as much as digits as its factorization.

1020219985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37703.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 1020219985 is about 31940.8826584364. The cubic root of 1020219985 is about 1006.6950709912.

The spelling of 1020219985 in words is "one billion, twenty million, two hundred nineteen thousand, nine hundred eighty-five".