1863913863907 has 2 divisors, whose sum is σ = 1863913863908. Its totient is φ = 1863913863906.

The previous prime is 1863913863893. The next prime is 1863913863919. The reversal of 1863913863907 is 7093683193681.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1863913863907 - 2¹⁹ = 1863913339619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1863913863997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931956931953 + 931956931954.

It is an arithmetic number, because the mean of its divisors is an integer number (931956931954).

Almost surely, 2^{1863913863907} is an apocalyptic number.

1863913863907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863913863907 is an equidigital number, since it uses as much as digits as its factorization.

1863913863907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 1863913863907 in words is "one trillion, eight hundred sixty-three billion, nine hundred thirteen million, eight hundred sixty-three thousand, nine hundred seven".