1863968494 has 4 divisors (see below), whose sum is σ = 2795952744. Its totient is φ = 931984246.

The previous prime is 1863968489. The next prime is 1863968503. The reversal of 1863968494 is 4948693681.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465992122 + ... + 465992125.

It is an arithmetic number, because the mean of its divisors is an integer number (698988186).

Almost surely, 2^1863968494 is an apocalyptic number.

1863968494 is a deficient number, since it is larger than the sum of its proper divisors (931984250).

1863968494 is an equidigital number, since it uses as much as digits as its factorization.

1863968494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931984249.

The product of its digits is 8957952, while the sum is 58.

The square root of 1863968494 is about 43173.7014164873. The cubic root of 1863968494 is about 1230.6829648389.

The spelling of 1863968494 in words is "one billion, eight hundred sixty-three million, nine hundred sixty-eight thousand, four hundred ninety-four".