609818431 has 2 divisors, whose sum is σ = 609818432. Its totient is φ = 609818430.

The previous prime is 609818413. The next prime is 609818491. The reversal of 609818431 is 134818906.

Together with previous prime (609818413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609818431 - 2⁹ = 609817919 is a prime.

It is a super-2 number, since 2×609818431² = 743757037574603522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609818491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304909215 + 304909216.

It is an arithmetic number, because the mean of its divisors is an integer number (304909216).

Almost surely, 2^609818431 is an apocalyptic number.

609818431 is a deficient number, since it is larger than the sum of its proper divisors (1).

609818431 is an equidigital number, since it uses as much as digits as its factorization.

609818431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 609818431 is about 24694.5020399278. The cubic root of 609818431 is about 848.0084544184.

The spelling of 609818431 in words is "six hundred nine million, eight hundred eighteen thousand, four hundred thirty-one".