609138953 has 2 divisors, whose sum is σ = 609138954. Its totient is φ = 609138952.

The previous prime is 609138949. The next prime is 609138991. The reversal of 609138953 is 359831906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565155529 + 43983424 = 23773^2 + 6632^2 .

It is a cyclic number.

It is not a de Polignac number, because 609138953 - 2² = 609138949 is a prime.

It is equal to p_31776848 and since 609138953 and 31776848 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (609138913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304569476 + 304569477.

It is an arithmetic number, because the mean of its divisors is an integer number (304569477).

Almost surely, 2^609138953 is an apocalyptic number.

It is an amenable number.

609138953 is a deficient number, since it is larger than the sum of its proper divisors (1).

609138953 is an equidigital number, since it uses as much as digits as its factorization.

609138953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 609138953 is about 24680.7405277881. The cubic root of 609138953 is about 847.6933785425.

The spelling of 609138953 in words is "six hundred nine million, one hundred thirty-eight thousand, nine hundred fifty-three".