1863649713 has 32 divisors (see below), whose sum is σ = 2709020160. Its totient is φ = 1135693440.

The previous prime is 1863649703. The next prime is 1863649717. The reversal of 1863649713 is 3179463681.

It is a happy number.

It is not a de Polignac number, because 1863649713 - 2¹² = 1863645617 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1863649717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198853 + ... + 208013.

It is an arithmetic number, because the mean of its divisors is an integer number (84656880).

Almost surely, 2^1863649713 is an apocalyptic number.

It is an amenable number.

1863649713 is a deficient number, since it is larger than the sum of its proper divisors (845370447).

1863649713 is a wasteful number, since it uses less digits than its factorization.

1863649713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309.

The product of its digits is 653184, while the sum is 48.

The square root of 1863649713 is about 43170.0094162603. The cubic root of 1863649713 is about 1230.6128025812.

The spelling of 1863649713 in words is "one billion, eight hundred sixty-three million, six hundred forty-nine thousand, seven hundred thirteen".