612618493 has 2 divisors, whose sum is σ = 612618494. Its totient is φ = 612618492.

The previous prime is 612618491. The next prime is 612618521. The reversal of 612618493 is 394816216.

612618493 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., 464704249 + 147914244 = 21557^2 + 12162^2 .

It is a cyclic number.

It is not a de Polignac number, because 612618493 - 2¹ = 612618491 is a prime.

Together with 612618491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612618491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306309246 + 306309247.

It is an arithmetic number, because the mean of its divisors is an integer number (306309247).

Almost surely, 2^612618493 is an apocalyptic number.

It is an amenable number.

612618493 is a deficient number, since it is larger than the sum of its proper divisors (1).

612618493 is an equidigital number, since it uses as much as digits as its factorization.

612618493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 612618493 is about 24751.1311458689. The cubic root of 612618493 is about 849.3043872896.

The spelling of 612618493 in words is "six hundred twelve million, six hundred eighteen thousand, four hundred ninety-three".