1872363863 has 6 divisors (see below), whose sum is σ = 1913051256. Its totient is φ = 1832524172.

The previous prime is 1872363853. The next prime is 1872363869. The reversal of 1872363863 is 3683632781.

It is not a de Polignac number, because 1872363863 - 2⁴ = 1872363847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872363869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421595 + ... + 426012.

It is an arithmetic number, because the mean of its divisors is an integer number (318841876).

Almost surely, 2^1872363863 is an apocalyptic number.

1872363863 is a deficient number, since it is larger than the sum of its proper divisors (40687393).

1872363863 is an frugal number, since it uses more digits than its factorization.

1872363863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847701 (or 847654 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 1872363863 is about 43270.8199945414. The cubic root of 1872363863 is about 1232.5278752025.

The spelling of 1872363863 in words is "one billion, eight hundred seventy-two million, three hundred sixty-three thousand, eight hundred sixty-three".