1982252890 has 8 divisors (see below), whose sum is σ = 3568055220. Its totient is φ = 792901152.

The previous prime is 1982252873. The next prime is 1982252891. The reversal of 1982252890 is 982522891.

It can be written as a sum of positive squares in 2 ways, for example, as 1895818681 + 86434209 = 43541^2 + 9297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1982252890.

It is not an unprimeable number, because it can be changed into a prime (1982252891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99112635 + ... + 99112654.

Almost surely, 2^1982252890 is an apocalyptic number.

1982252890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1982252890 is a deficient number, since it is larger than the sum of its proper divisors (1585802330).

1982252890 is a wasteful number, since it uses less digits than its factorization.

1982252890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198225296.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 1982252890 is about 44522.4986944803. The cubic root of 1982252890 is about 1256.1833127476.

The spelling of 1982252890 in words is "one billion, nine hundred eighty-two million, two hundred fifty-two thousand, eight hundred ninety".