198904938503 has 2 divisors, whose sum is σ = 198904938504. Its totient is φ = 198904938502.

The previous prime is 198904938481. The next prime is 198904938511. The reversal of 198904938503 is 305839409891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198904938503 - 2¹⁴ = 198904922119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198904938803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99452469251 + 99452469252.

It is an arithmetic number, because the mean of its divisors is an integer number (99452469252).

Almost surely, 2^198904938503 is an apocalyptic number.

198904938503 is a deficient number, since it is larger than the sum of its proper divisors (1).

198904938503 is an equidigital number, since it uses as much as digits as its factorization.

198904938503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 198904938503 in words is "one hundred ninety-eight billion, nine hundred four million, nine hundred thirty-eight thousand, five hundred three".