1863732493 has 24 divisors (see below), whose sum is σ = 2255806464. Its totient is φ = 1533621600.

The previous prime is 1863732421. The next prime is 1863732511. The reversal of 1863732493 is 3942373681.

It is not a de Polignac number, because 1863732493 - 2²⁹ = 1326861581 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 (1863730493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188083 + ... + 197743.

It is an arithmetic number, because the mean of its divisors is an integer number (93991936).

Almost surely, 2^1863732493 is an apocalyptic number.

It is an amenable number.

1863732493 is a deficient number, since it is larger than the sum of its proper divisors (392073971).

1863732493 is a wasteful number, since it uses less digits than its factorization.

1863732493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9833 (or 9826 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 1863732493 is about 43170.9681730674. The cubic root of 1863732493 is about 1230.6310228542.

The spelling of 1863732493 in words is "one billion, eight hundred sixty-three million, seven hundred thirty-two thousand, four hundred ninety-three".