1867249 has 2 divisors, whose sum is σ = 1867250. Its totient is φ = 1867248.

The previous prime is 1867241. The next prime is 1867253. The reversal of 1867249 is 9427681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1774224 + 93025 = 1332^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1867249 - 2³ = 1867241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1867241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933624 + 933625.

It is an arithmetic number, because the mean of its divisors is an integer number (933625).

2^1867249 is an apocalyptic number.

It is an amenable number.

1867249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1867249 is an equidigital number, since it uses as much as digits as its factorization.

1867249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 1867249 is about 1366.4731976881. The cubic root of 1867249 is about 123.1404525084.

It can be divided in two parts, 18672 and 49, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 1867249 in words is "one million, eight hundred sixty-seven thousand, two hundred forty-nine".