1986497463 has 16 divisors (see below), whose sum is σ = 2668303616. Its totient is φ = 1314532800.

The previous prime is 1986497417. The next prime is 1986497473. The reversal of 1986497463 is 3647946891.

It is not a de Polignac number, because 1986497463 - 2¹⁰ = 1986496439 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 (1986497473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470763 + ... + 474963.

It is an arithmetic number, because the mean of its divisors is an integer number (166768976).

Almost surely, 2^1986497463 is an apocalyptic number.

1986497463 is a deficient number, since it is larger than the sum of its proper divisors (681806153).

1986497463 is a wasteful number, since it uses less digits than its factorization.

1986497463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334.

The product of its digits is 7838208, while the sum is 57.

The square root of 1986497463 is about 44570.1409353841. The cubic root of 1986497463 is about 1257.0792900076.

The spelling of 1986497463 in words is "one billion, nine hundred eighty-six million, four hundred ninety-seven thousand, four hundred sixty-three".