1878241 has 4 divisors (see below), whose sum is σ = 1881792. Its totient is φ = 1874692.

The previous prime is 1878229. The next prime is 1878257. The reversal of 1878241 is 1428781.

It is the 560-th star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1878241 - 2⁵ = 1878209 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1878221) 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, 805 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (470448).

2^1878241 is an apocalyptic number.

It is an amenable number.

1878241 is a deficient number, since it is larger than the sum of its proper divisors (3551).

1878241 is an equidigital number, since it uses as much as digits as its factorization.

1878241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550.

The product of its digits is 3584, while the sum is 31.

The square root of 1878241 is about 1370.4893286706. The cubic root of 1878241 is about 123.3816116487.

The spelling of 1878241 in words is "one million, eight hundred seventy-eight thousand, two hundred forty-one".