109198651 has 2 divisors, whose sum is σ = 109198652. Its totient is φ = 109198650.

The previous prime is 109198627. The next prime is 109198669. The reversal of 109198651 is 156891901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109198651 - 2⁹ = 109198139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109198051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54599325 + 54599326.

It is an arithmetic number, because the mean of its divisors is an integer number (54599326).

Almost surely, 2^109198651 is an apocalyptic number.

109198651 is a deficient number, since it is larger than the sum of its proper divisors (1).

109198651 is an equidigital number, since it uses as much as digits as its factorization.

109198651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 40.

The square root of 109198651 is about 10449.8158356978. The cubic root of 109198651 is about 477.9756338134.

The spelling of 109198651 in words is "one hundred nine million, one hundred ninety-eight thousand, six hundred fifty-one".