198412507 has 2 divisors, whose sum is σ = 198412508. Its totient is φ = 198412506.

The previous prime is 198412483. The next prime is 198412523. The reversal of 198412507 is 705214891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198412507 - 2¹⁵ = 198379739 is a prime.

It is not a weakly prime, because it can be changed into another prime (198412567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99206253 + 99206254.

It is an arithmetic number, because the mean of its divisors is an integer number (99206254).

Almost surely, 2^198412507 is an apocalyptic number.

198412507 is a deficient number, since it is larger than the sum of its proper divisors (1).

198412507 is an equidigital number, since it uses as much as digits as its factorization.

198412507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 198412507 is about 14085.8974509969. The cubic root of 198412507 is about 583.2521497542.

The spelling of 198412507 in words is "one hundred ninety-eight million, four hundred twelve thousand, five hundred seven".