1863766940385 has 16 divisors (see below), whose sum is σ = 3408030976896. Its totient is φ = 852007744128.

The previous prime is 1863766940369. The next prime is 1863766940401. The reversal of 1863766940385 is 5830496673681.

It is an interprime number because it is at equal distance from previous prime (1863766940369) and next prime (1863766940401).

It is not a de Polignac number, because 1863766940385 - 2⁴ = 1863766940369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8875080564 + ... + 8875080773.

It is an arithmetic number, because the mean of its divisors is an integer number (213001936056).

Almost surely, 2^{1863766940385} is an apocalyptic number.

1863766940385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1863766940385 is a deficient number, since it is larger than the sum of its proper divisors (1544264036511).

1863766940385 is a wasteful number, since it uses less digits than its factorization.

1863766940385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17750161352.

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 1863766940385 in words is "one trillion, eight hundred sixty-three billion, seven hundred sixty-six million, nine hundred forty thousand, three hundred eighty-five".