1980636741 has 12 divisors (see below), whose sum is σ = 3011494720. Its totient is φ = 1250928360.

The previous prime is 1980636727. The next prime is 1980636787. The reversal of 1980636741 is 1476360891.

It is a happy number.

1980636741 is a `hidden beast` number, since 1 + 9 + 8 + 0 + 636 + 7 + 4 + 1 = 666.

It is not a de Polignac number, because 1980636741 - 2⁵ = 1980636709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980636641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5791165 + ... + 5791506.

Almost surely, 2^1980636741 is an apocalyptic number.

It is an amenable number.

1980636741 is a deficient number, since it is larger than the sum of its proper divisors (1030857979).

1980636741 is a wasteful number, since it uses less digits than its factorization.

1980636741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11582696 (or 11582693 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1980636741 is about 44504.3451923517. The cubic root of 1980636741 is about 1255.8418273252.

The spelling of 1980636741 in words is "one billion, nine hundred eighty million, six hundred thirty-six thousand, seven hundred forty-one".