1982955285 has 12 divisors (see below), whose sum is σ = 3437122572. Its totient is φ = 1057576128.

The previous prime is 1982955263. The next prime is 1982955313. The reversal of 1982955285 is 5825592891.

1982955285 is a `hidden beast` number, since 1 + 9 + 8 + 2 + 9 + 552 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 455865201 + 1527090084 = 21351^2 + 39078^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1982955285 is a prime.

It is a super-2 number, since 2×1982955285² = 7864223324618862450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22032792 + ... + 22032881.

It is an arithmetic number, because the mean of its divisors is an integer number (286426881).

Almost surely, 2^1982955285 is an apocalyptic number.

1982955285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1982955285 is a deficient number, since it is larger than the sum of its proper divisors (1454167287).

1982955285 is a wasteful number, since it uses less digits than its factorization.

1982955285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44065684 (or 44065681 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 54.

The square root of 1982955285 is about 44530.3860863568. The cubic root of 1982955285 is about 1256.3316679661.

The spelling of 1982955285 in words is "one billion, nine hundred eighty-two million, nine hundred fifty-five thousand, two hundred eighty-five".