1990852794 has 96 divisors (see below), whose sum is σ = 5201988480. Its totient is φ = 537549696.

The previous prime is 1990852781. The next prime is 1990852817. The reversal of 1990852794 is 4972580991.

It is a self number, because there is not a number n which added to its sum of digits gives 1990852794.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1332712 + ... + 1334204.

It is an arithmetic number, because the mean of its divisors is an integer number (54187380).

Almost surely, 2^1990852794 is an apocalyptic number.

1990852794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1990852794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600994240).

1990852794 is an abundant number, since it is smaller than the sum of its proper divisors (3211135686).

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

1990852794 is a wasteful number, since it uses less digits than its factorization.

1990852794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The square root of 1990852794 is about 44618.9734754174. The cubic root of 1990852794 is about 1257.9973212190.

The spelling of 1990852794 in words is "one billion, nine hundred ninety million, eight hundred fifty-two thousand, seven hundred ninety-four".