612319849 has 2 divisors, whose sum is σ = 612319850. Its totient is φ = 612319848.

The previous prime is 612319847. The next prime is 612319853. The reversal of 612319849 is 948913216.

It is a happy number.

612319849 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., 611671824 + 648025 = 24732^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 612319849 - 2¹ = 612319847 is a prime.

Together with 612319847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (612319847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306159924 + 306159925.

It is an arithmetic number, because the mean of its divisors is an integer number (306159925).

Almost surely, 2^612319849 is an apocalyptic number.

It is an amenable number.

612319849 is a deficient number, since it is larger than the sum of its proper divisors (1).

612319849 is an equidigital number, since it uses as much as digits as its factorization.

612319849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 612319849 is about 24745.0974740452. The cubic root of 612319849 is about 849.1663563677.

The spelling of 612319849 in words is "six hundred twelve million, three hundred nineteen thousand, eight hundred forty-nine".