180763493 has 2 divisors, whose sum is σ = 180763494. Its totient is φ = 180763492.

The previous prime is 180763487. The next prime is 180763543. The reversal of 180763493 is 394367081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127283524 + 53479969 = 11282^2 + 7313^2 .

It is a cyclic number.

It is not a de Polignac number, because 180763493 - 2⁸ = 180763237 is a prime.

It is a super-2 number, since 2×180763493² = 65350880803122098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 180763493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180763483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90381746 + 90381747.

It is an arithmetic number, because the mean of its divisors is an integer number (90381747).

Almost surely, 2^180763493 is an apocalyptic number.

It is an amenable number.

180763493 is a deficient number, since it is larger than the sum of its proper divisors (1).

180763493 is an equidigital number, since it uses as much as digits as its factorization.

180763493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 180763493 is about 13444.8314604535. The cubic root of 180763493 is about 565.4187961888.

The spelling of 180763493 in words is "one hundred eighty million, seven hundred sixty-three thousand, four hundred ninety-three".