198348751 has 2 divisors, whose sum is σ = 198348752. Its totient is φ = 198348750.

The previous prime is 198348721. The next prime is 198348763. The reversal of 198348751 is 157843891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198348751 - 2²¹ = 196251599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198348701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99174375 + 99174376.

It is an arithmetic number, because the mean of its divisors is an integer number (99174376).

Almost surely, 2^198348751 is an apocalyptic number.

198348751 is a deficient number, since it is larger than the sum of its proper divisors (1).

198348751 is an equidigital number, since it uses as much as digits as its factorization.

198348751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 46.

The square root of 198348751 is about 14083.6341545781. The cubic root of 198348751 is about 583.1896708169.

The spelling of 198348751 in words is "one hundred ninety-eight million, three hundred forty-eight thousand, seven hundred fifty-one".