118204649 has 2 divisors, whose sum is σ = 118204650. Its totient is φ = 118204648.

The previous prime is 118204633. The next prime is 118204657. The reversal of 118204649 is 946402811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86620249 + 31584400 = 9307^2 + 5620^2 .

It is a cyclic number.

It is not a de Polignac number, because 118204649 - 2⁴ = 118204633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118204679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59102324 + 59102325.

It is an arithmetic number, because the mean of its divisors is an integer number (59102325).

Almost surely, 2^118204649 is an apocalyptic number.

It is an amenable number.

118204649 is a deficient number, since it is larger than the sum of its proper divisors (1).

118204649 is an equidigital number, since it uses as much as digits as its factorization.

118204649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 118204649 is about 10872.1961442939. The cubic root of 118204649 is about 490.7702020307.

The spelling of 118204649 in words is "one hundred eighteen million, two hundred four thousand, six hundred forty-nine".