1023118194 has 64 divisors (see below), whose sum is σ = 2476200960. Its totient is φ = 275296320.

The previous prime is 1023118181. The next prime is 1023118199. The reversal of 1023118194 is 4918113201.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1023118199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134349 + ... + 141759.

It is an arithmetic number, because the mean of its divisors is an integer number (38690640).

Almost surely, 2^1023118194 is an apocalyptic number.

1023118194 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 1023118194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238100480).

1023118194 is an abundant number, since it is smaller than the sum of its proper divisors (1453082766).

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

1023118194 is a wasteful number, since it uses less digits than its factorization.

1023118194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1023118194 is about 31986.2188137329. The cubic root of 1023118194 is about 1007.6474323628.

The spelling of 1023118194 in words is "one billion, twenty-three million, one hundred eighteen thousand, one hundred ninety-four".