1863445376 has 48 divisors (see below), whose sum is σ = 4019909760. Its totient is φ = 860041728.

The previous prime is 1863445343. The next prime is 1863445379. The reversal of 1863445376 is 6735443681.

It is a self number, because there is not a number n which added to its sum of digits gives 1863445376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1863445379) 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, 21440 + ... + 64703.

It is an arithmetic number, because the mean of its divisors is an integer number (83748120).

Almost surely, 2^1863445376 is an apocalyptic number.

1863445376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1863445376 is an abundant number, since it is smaller than the sum of its proper divisors (2156464384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1863445376 is an equidigital number, since it uses as much as digits as its factorization.

1863445376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86183 (or 86158 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The square root of 1863445376 is about 43167.6426968163. The cubic root of 1863445376 is about 1230.5678247227.

The spelling of 1863445376 in words is "one billion, eight hundred sixty-three million, four hundred forty-five thousand, three hundred seventy-six".