1982387925 has 168 divisors, whose sum is σ = 4326181440. Its totient is φ = 881798400.

The previous prime is 1982387921. The next prime is 1982387929. The reversal of 1982387925 is 5297832891.

It is an interprime number because it is at equal distance from previous prime (1982387921) and next prime (1982387929).

It is not a de Polignac number, because 1982387925 - 2² = 1982387921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982387921) 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 167 ways as a sum of consecutive naturals, for example, 5230386 + ... + 5230764.

It is an arithmetic number, because the mean of its divisors is an integer number (25751080).

Almost surely, 2^1982387925 is an apocalyptic number.

1982387925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1982387925 is an abundant number, since it is smaller than the sum of its proper divisors (2343793515).

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

1982387925 is an equidigital number, since it uses as much as digits as its factorization.

1982387925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 435 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 1982387925 is about 44524.0151491305. The cubic root of 1982387925 is about 1256.2118366665.

The spelling of 1982387925 in words is "one billion, nine hundred eighty-two million, three hundred eighty-seven thousand, nine hundred twenty-five".