919493420803 has 2 divisors, whose sum is σ = 919493420804. Its totient is φ = 919493420802.

The previous prime is 919493420801. The next prime is 919493420843. The reversal of 919493420803 is 308024394919.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 919493420803 - 2¹ = 919493420801 is a prime.

Together with 919493420801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (919493420801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459746710401 + 459746710402.

It is an arithmetic number, because the mean of its divisors is an integer number (459746710402).

Almost surely, 2^919493420803 is an apocalyptic number.

919493420803 is a deficient number, since it is larger than the sum of its proper divisors (1).

919493420803 is an equidigital number, since it uses as much as digits as its factorization.

919493420803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 919493420803 in words is "nine hundred nineteen billion, four hundred ninety-three million, four hundred twenty thousand, eight hundred three".