180397093 has 2 divisors, whose sum is σ = 180397094. Its totient is φ = 180397092.

The previous prime is 180397067. The next prime is 180397103. The reversal of 180397093 is 390793081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180150084 + 247009 = 13422^2 + 497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180397093 is a prime.

It is a super-2 number, since 2×180397093² = 65086222325701298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180397033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90198546 + 90198547.

It is an arithmetic number, because the mean of its divisors is an integer number (90198547).

Almost surely, 2^180397093 is an apocalyptic number.

It is an amenable number.

180397093 is a deficient number, since it is larger than the sum of its proper divisors (1).

180397093 is an equidigital number, since it uses as much as digits as its factorization.

180397093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 180397093 is about 13431.1984945499. The cubic root of 180397093 is about 565.0365110715.

The spelling of 180397093 in words is "one hundred eighty million, three hundred ninety-seven thousand, ninety-three".