1986266463 has 16 divisors (see below), whose sum is σ = 2741575680. Its totient is φ = 1277630816.

The previous prime is 1986266461. The next prime is 1986266467. The reversal of 1986266463 is 3646626891.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1986266463 - 2¹ = 1986266461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986266461) 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, 132706 + ... + 146912.

It is an arithmetic number, because the mean of its divisors is an integer number (171348480).

Almost surely, 2^1986266463 is an apocalyptic number.

1986266463 is a deficient number, since it is larger than the sum of its proper divisors (755309217).

1986266463 is a wasteful number, since it uses less digits than its factorization.

1986266463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15846.

The product of its digits is 2239488, while the sum is 51.

The square root of 1986266463 is about 44567.5494390257. The cubic root of 1986266463 is about 1257.0305616003.

The spelling of 1986266463 in words is "one billion, nine hundred eighty-six million, two hundred sixty-six thousand, four hundred sixty-three".