1083948894 has 72 divisors (see below), whose sum is σ = 2776918248. Its totient is φ = 304607520.

The previous prime is 1083948893. The next prime is 1083948911. The reversal of 1083948894 is 4988493801.

It is a self number, because there is not a number n which added to its sum of digits gives 1083948894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083948893) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43729 + ... + 63875.

It is an arithmetic number, because the mean of its divisors is an integer number (38568309).

Almost surely, 2^1083948894 is an apocalyptic number.

1083948894 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 1083948894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388459124).

1083948894 is an abundant number, since it is smaller than the sum of its proper divisors (1692969354).

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

1083948894 is a wasteful number, since it uses less digits than its factorization.

1083948894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20230 (or 20220 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 1083948894 is about 32923.3791400579. The cubic root of 1083948894 is about 1027.2345125443.

The spelling of 1083948894 in words is "one billion, eighty-three million, nine hundred forty-eight thousand, eight hundred ninety-four".