1985070822 has 64 divisors (see below), whose sum is σ = 4701542400. Its totient is φ = 546698880.

The previous prime is 1985070817. The next prime is 1985070853. The reversal of 1985070822 is 2280705891.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108704 + ... + 1110492.

It is an arithmetic number, because the mean of its divisors is an integer number (73461600).

Almost surely, 2^1985070822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1985070822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2350771200).

1985070822 is an abundant number, since it is smaller than the sum of its proper divisors (2716471578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1985070822 is a wasteful number, since it uses less digits than its factorization.

1985070822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 1985070822 is about 44554.1336129433. The cubic root of 1985070822 is about 1256.7782861248.

The spelling of 1985070822 in words is "one billion, nine hundred eighty-five million, seventy thousand, eight hundred twenty-two".