658423049 has 2 divisors, whose sum is σ = 658423050. Its totient is φ = 658423048.

The previous prime is 658423027. The next prime is 658423061. The reversal of 658423049 is 940324856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618417424 + 40005625 = 24868^2 + 6325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-658423049 is a prime.

It is a super-2 number, since 2×658423049² = 867041822908912802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 658422997 and 658423015.

It is not a weakly prime, because it can be changed into another prime (658423019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329211524 + 329211525.

It is an arithmetic number, because the mean of its divisors is an integer number (329211525).

Almost surely, 2^658423049 is an apocalyptic number.

It is an amenable number.

658423049 is a deficient number, since it is larger than the sum of its proper divisors (1).

658423049 is an equidigital number, since it uses as much as digits as its factorization.

658423049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 658423049 is about 25659.7554353115. The cubic root of 658423049 is about 869.9647887277.

The spelling of 658423049 in words is "six hundred fifty-eight million, four hundred twenty-three thousand, forty-nine".