2180393 has 2 divisors, whose sum is σ = 2180394. Its totient is φ = 2180392.

The previous prime is 2180389. The next prime is 2180417. The reversal of 2180393 is 3930812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1857769 + 322624 = 1363^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180393 - 2² = 2180389 is a prime.

It is a super-2 number, since 2×2180393² = 9508227268898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2180303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090196 + 1090197.

It is an arithmetic number, because the mean of its divisors is an integer number (1090197).

2^2180393 is an apocalyptic number.

It is an amenable number.

2180393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180393 is an equidigital number, since it uses as much as digits as its factorization.

2180393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2180393 is about 1476.6153866190. The cubic root of 2180393 is about 129.6716169546.

The spelling of 2180393 in words is "two million, one hundred eighty thousand, three hundred ninety-three".