198379157 has 2 divisors, whose sum is σ = 198379158. Its totient is φ = 198379156.

The previous prime is 198379147. The next prime is 198379193. The reversal of 198379157 is 751973891.

198379157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191794801 + 6584356 = 13849^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 198379157 - 2⁴ = 198379141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198379147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99189578 + 99189579.

It is an arithmetic number, because the mean of its divisors is an integer number (99189579).

Almost surely, 2^198379157 is an apocalyptic number.

It is an amenable number.

198379157 is a deficient number, since it is larger than the sum of its proper divisors (1).

198379157 is an equidigital number, since it uses as much as digits as its factorization.

198379157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 50.

The square root of 198379157 is about 14084.7135931122. The cubic root of 198379157 is about 583.2194694402.

The spelling of 198379157 in words is "one hundred ninety-eight million, three hundred seventy-nine thousand, one hundred fifty-seven".