1863997445266 has 8 divisors (see below), whose sum is σ = 3050177637744. Its totient is φ = 847271566020.

The previous prime is 1863997445251. The next prime is 1863997445279. The reversal of 1863997445266 is 6625447993681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1863997445195 and 1863997445204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42363578280 + ... + 42363578323.

It is an arithmetic number, because the mean of its divisors is an integer number (381272204718).

Almost surely, 2^{1863997445266} is an apocalyptic number.

1863997445266 is a deficient number, since it is larger than the sum of its proper divisors (1186180192478).

1863997445266 is a wasteful number, since it uses less digits than its factorization.

1863997445266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84727156616.

The product of its digits is 470292480, while the sum is 70.

The spelling of 1863997445266 in words is "one trillion, eight hundred sixty-three billion, nine hundred ninety-seven million, four hundred forty-five thousand, two hundred sixty-six".