1840982993 has 2 divisors, whose sum is σ = 1840982994. Its totient is φ = 1840982992.

The previous prime is 1840982953. The next prime is 1840983041. The reversal of 1840982993 is 3992890481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1776453904 + 64529089 = 42148^2 + 8033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1840982993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1840982933) 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 as a sum of consecutive naturals, namely, 920491496 + 920491497.

It is an arithmetic number, because the mean of its divisors is an integer number (920491497).

Almost surely, 2^1840982993 is an apocalyptic number.

It is an amenable number.

1840982993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840982993 is an equidigital number, since it uses as much as digits as its factorization.

1840982993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 1840982993 is about 42906.6777203736. The cubic root of 1840982993 is about 1225.6033108736.

The spelling of 1840982993 in words is "one billion, eight hundred forty million, nine hundred eighty-two thousand, nine hundred ninety-three".