1881267 has 4 divisors (see below), whose sum is σ = 2508360. Its totient is φ = 1254176.

The previous prime is 1881263. The next prime is 1881277. The reversal of 1881267 is 7621881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7621881 = 3 ⋅2540627.

It is a cyclic number.

It is not a de Polignac number, because 1881267 - 2² = 1881263 is a prime.

It is a D-number.

1881267 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1881263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313542 + ... + 313547.

It is an arithmetic number, because the mean of its divisors is an integer number (627090).

2^1881267 is an apocalyptic number.

1881267 is a deficient number, since it is larger than the sum of its proper divisors (627093).

1881267 is an equidigital number, since it uses as much as digits as its factorization.

1881267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627092.

The product of its digits is 5376, while the sum is 33.

The square root of 1881267 is about 1371.5928696228. The cubic root of 1881267 is about 123.4478353895.

The spelling of 1881267 in words is "one million, eight hundred eighty-one thousand, two hundred sixty-seven".