1863214964 has 24 divisors (see below), whose sum is σ = 3542529480. Its totient is φ = 852332544.

The previous prime is 1863214963. The next prime is 1863214987. The reversal of 1863214964 is 4694123681.

It can be written as a sum of positive squares in 4 ways, for example, as 323280400 + 1539934564 = 17980^2 + 39242^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1863214963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152669 + ... + 164420.

It is an arithmetic number, because the mean of its divisors is an integer number (147605395).

Almost surely, 2^1863214964 is an apocalyptic number.

It is an amenable number.

1863214964 is a deficient number, since it is larger than the sum of its proper divisors (1679314516).

1863214964 is a wasteful number, since it uses less digits than its factorization.

1863214964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317219 (or 317217 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 1863214964 is about 43164.9738097917. The cubic root of 1863214964 is about 1230.5171033932.

The spelling of 1863214964 in words is "one billion, eight hundred sixty-three million, two hundred fourteen thousand, nine hundred sixty-four".