1826991140 has 48 divisors (see below), whose sum is σ = 4152691200. Its totient is φ = 671172480.

The previous prime is 1826991091. The next prime is 1826991149. The reversal of 1826991140 is 411996281.

It is not an unprimeable number, because it can be changed into a prime (1826991149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34085 + ... + 69395.

It is an arithmetic number, because the mean of its divisors is an integer number (86514400).

Almost surely, 2^1826991140 is an apocalyptic number.

1826991140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1826991140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2076345600).

1826991140 is an abundant number, since it is smaller than the sum of its proper divisors (2325700060).

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

1826991140 is a wasteful number, since it uses less digits than its factorization.

1826991140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35532 (or 35530 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1826991140 is about 42743.3169045174. The cubic root of 1826991140 is about 1222.4904648646.

The spelling of 1826991140 in words is "one billion, eight hundred twenty-six million, nine hundred ninety-one thousand, one hundred forty".