1982125636 has 12 divisors (see below), whose sum is σ = 3469380460. Its totient is φ = 990874080.

The previous prime is 1982125601. The next prime is 1982125661. The reversal of 1982125636 is 6365212891.

It can be written as a sum of positive squares in 2 ways, for example, as 1296000000 + 686125636 = 36000^2 + 26194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1982125592 and 1982125601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22071 + ... + 66718.

Almost surely, 2^1982125636 is an apocalyptic number.

It is an amenable number.

1982125636 is a deficient number, since it is larger than the sum of its proper divisors (1487254824).

1982125636 is a wasteful number, since it uses less digits than its factorization.

1982125636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94374 (or 94372 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 1982125636 is about 44521.0695738546. The cubic root of 1982125636 is about 1256.1564312511.

The spelling of 1982125636 in words is "one billion, nine hundred eighty-two million, one hundred twenty-five thousand, six hundred thirty-six".