180394057 has 2 divisors, whose sum is σ = 180394058. Its totient is φ = 180394056.

The previous prime is 180394013. The next prime is 180394069. The reversal of 180394057 is 750493081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131239936 + 49154121 = 11456^2 + 7011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180394057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (180394657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90197028 + 90197029.

It is an arithmetic number, because the mean of its divisors is an integer number (90197029).

Almost surely, 2^180394057 is an apocalyptic number.

It is an amenable number.

180394057 is a deficient number, since it is larger than the sum of its proper divisors (1).

180394057 is an equidigital number, since it uses as much as digits as its factorization.

180394057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 180394057 is about 13431.0854736317. The cubic root of 180394057 is about 565.0333412856.

The spelling of 180394057 in words is "one hundred eighty million, three hundred ninety-four thousand, fifty-seven".