609426161 has 2 divisors, whose sum is σ = 609426162. Its totient is φ = 609426160.

The previous prime is 609426151. The next prime is 609426187. The reversal of 609426161 is 161624906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 609102400 + 323761 = 24680^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 609426161 - 2¹⁰ = 609425137 is a prime.

It is a super-2 number, since 2×609426161² = 742800491422395842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (609426131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304713080 + 304713081.

It is an arithmetic number, because the mean of its divisors is an integer number (304713081).

Almost surely, 2^609426161 is an apocalyptic number.

It is an amenable number.

609426161 is a deficient number, since it is larger than the sum of its proper divisors (1).

609426161 is an equidigital number, since it uses as much as digits as its factorization.

609426161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 609426161 is about 24686.5583060904. The cubic root of 609426161 is about 847.8265862802.

The spelling of 609426161 in words is "six hundred nine million, four hundred twenty-six thousand, one hundred sixty-one".