1986849480937 has 4 divisors (see below), whose sum is σ = 1986852437460. Its totient is φ = 1986846524416.

The previous prime is 1986849480923. The next prime is 1986849480949. The reversal of 1986849480937 is 7390849486891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 385685713296 + 1601163767641 = 621036^2 + 1265371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1986849480937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1986849480037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70989 + ... + 1994677.

It is an arithmetic number, because the mean of its divisors is an integer number (496713109365).

Almost surely, 2^{1986849480937} is an apocalyptic number.

It is an amenable number.

1986849480937 is a deficient number, since it is larger than the sum of its proper divisors (2956523).

1986849480937 is a wasteful number, since it uses less digits than its factorization.

1986849480937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956522.

The product of its (nonzero) digits is 752467968, while the sum is 76.

The spelling of 1986849480937 in words is "one trillion, nine hundred eighty-six billion, eight hundred forty-nine million, four hundred eighty thousand, nine hundred thirty-seven".