180208157 has 2 divisors, whose sum is σ = 180208158. Its totient is φ = 180208156.

The previous prime is 180208123. The next prime is 180208159. The reversal of 180208157 is 751802081.

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., 171976996 + 8231161 = 13114^2 + 2869^2 .

It is a cyclic number.

It is not a de Polignac number, because 180208157 - 2¹⁰ = 180207133 is a prime.

Together with 180208159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180208159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90104078 + 90104079.

It is an arithmetic number, because the mean of its divisors is an integer number (90104079).

Almost surely, 2^180208157 is an apocalyptic number.

It is an amenable number.

180208157 is a deficient number, since it is larger than the sum of its proper divisors (1).

180208157 is an equidigital number, since it uses as much as digits as its factorization.

180208157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 180208157 is about 13424.1631768986. The cubic root of 180208157 is about 564.8391815251.

The spelling of 180208157 in words is "one hundred eighty million, two hundred eight thousand, one hundred fifty-seven".