180190493 has 6 divisors (see below), whose sum is σ = 209609406. Its totient is φ = 154448952.

The previous prime is 180190489. The next prime is 180190501. The reversal of 180190493 is 394091081.

It can be written as a sum of positive squares in only one way, i.e., 178008964 + 2181529 = 13342^2 + 1477^2 .

It is not a de Polignac number, because 180190493 - 2² = 180190489 is a prime.

It is a super-4 number, since 4×180190493⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180190453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1838630 + ... + 1838727.

It is an arithmetic number, because the mean of its divisors is an integer number (34934901).

Almost surely, 2^180190493 is an apocalyptic number.

It is an amenable number.

180190493 is a deficient number, since it is larger than the sum of its proper divisors (29418913).

180190493 is an equidigital number, since it uses as much as digits as its factorization.

180190493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677371 (or 3677364 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 180190493 is about 13423.5052426704. The cubic root of 180190493 is about 564.8207257470.

The spelling of 180190493 in words is "one hundred eighty million, one hundred ninety thousand, four hundred ninety-three".