1840787982 has 192 divisors, whose sum is σ = 4912876800. Its totient is φ = 490890240.

The previous prime is 1840787959. The next prime is 1840787987. The reversal of 1840787982 is 2897870481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840787987) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6842944 + ... + 6843212.

It is an arithmetic number, because the mean of its divisors is an integer number (25587900).

Almost surely, 2^1840787982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1840787982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456438400).

1840787982 is an abundant number, since it is smaller than the sum of its proper divisors (3072088818).

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

1840787982 is a wasteful number, since it uses less digits than its factorization.

1840787982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The square root of 1840787982 is about 42904.4051584450. The cubic root of 1840787982 is about 1225.5600342531.

The spelling of 1840787982 in words is "one billion, eight hundred forty million, seven hundred eighty-seven thousand, nine hundred eighty-two".