198678083 has 2 divisors, whose sum is σ = 198678084. Its totient is φ = 198678082.

The previous prime is 198678023. The next prime is 198678097. The reversal of 198678083 is 380876891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198678083 is a prime.

It is not a weakly prime, because it can be changed into another prime (198678023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99339041 + 99339042.

It is an arithmetic number, because the mean of its divisors is an integer number (99339042).

Almost surely, 2^198678083 is an apocalyptic number.

198678083 is a deficient number, since it is larger than the sum of its proper divisors (1).

198678083 is an equidigital number, since it uses as much as digits as its factorization.

198678083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 198678083 is about 14095.3213159545. The cubic root of 198678083 is about 583.5122622444.

The spelling of 198678083 in words is "one hundred ninety-eight million, six hundred seventy-eight thousand, eighty-three".