1982745930 has 48 divisors (see below), whose sum is σ = 5230526112. Its totient is φ = 480664800.

The previous prime is 1982745883. The next prime is 1982745977. The reversal of 1982745930 is 395472891.

It is an interprime number because it is at equal distance from previous prime (1982745883) and next prime (1982745977).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1982745930.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269476 + ... + 276735.

It is an arithmetic number, because the mean of its divisors is an integer number (108969294).

Almost surely, 2^1982745930 is an apocalyptic number.

1982745930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1982745930 is an abundant number, since it is smaller than the sum of its proper divisors (3247780182).

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

1982745930 is a wasteful number, since it uses less digits than its factorization.

1982745930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546243 (or 546232 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1982745930 is about 44528.0353260729. The cubic root of 1982745930 is about 1256.2874530553.

The spelling of 1982745930 in words is "one billion, nine hundred eighty-two million, seven hundred forty-five thousand, nine hundred thirty".