2180741 has 2 divisors, whose sum is σ = 2180742. Its totient is φ = 2180740.

The previous prime is 2180723. The next prime is 2180747. The reversal of 2180741 is 1470812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2163841 + 16900 = 1471^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180741 - 2⁶ = 2180677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090370 + 1090371.

It is an arithmetic number, because the mean of its divisors is an integer number (1090371).

2^2180741 is an apocalyptic number.

It is an amenable number.

2180741 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180741 is an equidigital number, since it uses as much as digits as its factorization.

2180741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 2180741 is about 1476.7332189668. The cubic root of 2180741 is about 129.6785153015.

It can be divided in two parts, 21 and 80741, that multiplied together give a triangular number (1695561 = T₁₈₄₁).

The spelling of 2180741 in words is "two million, one hundred eighty thousand, seven hundred forty-one".