180426149 has 2 divisors, whose sum is σ = 180426150. Its totient is φ = 180426148.

The previous prime is 180426121. The next prime is 180426173. The reversal of 180426149 is 941624081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112890625 + 67535524 = 10625^2 + 8218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180426149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180425149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90213074 + 90213075.

It is an arithmetic number, because the mean of its divisors is an integer number (90213075).

Almost surely, 2^180426149 is an apocalyptic number.

It is an amenable number.

180426149 is a deficient number, since it is larger than the sum of its proper divisors (1).

180426149 is an equidigital number, since it uses as much as digits as its factorization.

180426149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 180426149 is about 13432.2801117308. The cubic root of 180426149 is about 565.0668456688.

The spelling of 180426149 in words is "one hundred eighty million, four hundred twenty-six thousand, one hundred forty-nine".