2168437 has 2 divisors, whose sum is σ = 2168438. Its totient is φ = 2168436.

The previous prime is 2168429. The next prime is 2168473. The reversal of 2168437 is 7348612.

Together with next prime (2168473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 749956 = 1191^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168437 - 2³ = 2168429 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 1 + 6⁶ + 8³ + 4⁴ + 3¹³ + 7⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 2168399 and 2168408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084218 + 1084219.

It is an arithmetic number, because the mean of its divisors is an integer number (1084219).

2^2168437 is an apocalyptic number.

It is an amenable number.

2168437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168437 is an equidigital number, since it uses as much as digits as its factorization.

2168437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 2168437 is about 1472.5613739332. The cubic root of 2168437 is about 129.4341679777.

The spelling of 2168437 in words is "two million, one hundred sixty-eight thousand, four hundred thirty-seven".