1649871486 has 24 divisors (see below), whose sum is σ = 3585534264. Its totient is φ = 548293680.

The previous prime is 1649871473. The next prime is 1649871523. The reversal of 1649871486 is 6841789461.

1649871486 is a `hidden beast` number, since 1 + 6 + 4 + 98 + 71 + 486 = 666.

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, 132501 + ... + 144416.

It is an arithmetic number, because the mean of its divisors is an integer number (149397261).

Almost surely, 2^1649871486 is an apocalyptic number.

1649871486 is an abundant number, since it is smaller than the sum of its proper divisors (1935662778).

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

1649871486 is a wasteful number, since it uses less digits than its factorization.

1649871486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277256 (or 277253 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 1649871486 is about 40618.6100943890. The cubic root of 1649871486 is about 1181.6350707634.

The spelling of 1649871486 in words is "one billion, six hundred forty-nine million, eight hundred seventy-one thousand, four hundred eighty-six".