1985892822 has 64 divisors (see below), whose sum is σ = 4558498560. Its totient is φ = 640446912.

The previous prime is 1985892817. The next prime is 1985892889. The reversal of 1985892822 is 2282985891.

It is a happy number.

1985892822 is a `hidden beast` number, since 19 + 8 + 589 + 28 + 22 = 666.

It is a super-2 number, since 2×1985892822² = 7887540600942247368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244458 + ... + 252450.

It is an arithmetic number, because the mean of its divisors is an integer number (71226540).

Almost surely, 2^1985892822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1985892822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2279249280).

1985892822 is an abundant number, since it is smaller than the sum of its proper divisors (2572605738).

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

1985892822 is a wasteful number, since it uses less digits than its factorization.

1985892822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154 (or 8148 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 1985892822 is about 44563.3573914713. The cubic root of 1985892822 is about 1256.9517357195.

The spelling of 1985892822 in words is "one billion, nine hundred eighty-five million, eight hundred ninety-two thousand, eight hundred twenty-two".