1863193920378 has 32 divisors (see below), whose sum is σ = 4345641801600. Its totient is φ = 532341119520.

The previous prime is 1863193920373. The next prime is 1863193920431. The reversal of 1863193920378 is 8730293913681.

It is not an unprimeable number, because it can be changed into a prime (1863193920373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452668963 + ... + 452673078.

It is an arithmetic number, because the mean of its divisors is an integer number (135801306300).

Almost surely, 2^{1863193920378} is an apocalyptic number.

1863193920378 is an abundant number, since it is smaller than the sum of its proper divisors (2482447881222).

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

1863193920378 is an equidigital number, since it uses as much as digits as its factorization.

1863193920378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905342067 (or 905342053 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 1863193920378 in words is "one trillion, eight hundred sixty-three billion, one hundred ninety-three million, nine hundred twenty thousand, three hundred seventy-eight".