180115457 has 2 divisors, whose sum is σ = 180115458. Its totient is φ = 180115456.

The previous prime is 180115423. The next prime is 180115469. The reversal of 180115457 is 754511081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162843121 + 17272336 = 12761^2 + 4156^2 .

It is a cyclic number.

It is not a de Polignac number, because 180115457 - 2⁶ = 180115393 is a prime.

It is not a weakly prime, because it can be changed into another prime (180115157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90057728 + 90057729.

It is an arithmetic number, because the mean of its divisors is an integer number (90057729).

Almost surely, 2^180115457 is an apocalyptic number.

It is an amenable number.

180115457 is a deficient number, since it is larger than the sum of its proper divisors (1).

180115457 is an equidigital number, since it uses as much as digits as its factorization.

180115457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 180115457 is about 13420.7100035728. The cubic root of 180115457 is about 564.7423128562.

The spelling of 180115457 in words is "one hundred eighty million, one hundred fifteen thousand, four hundred fifty-seven".