1874921 has 2 divisors, whose sum is σ = 1874922. Its totient is φ = 1874920.

The previous prime is 1874903. The next prime is 1874923. The reversal of 1874921 is 1294781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 577600 = 1139^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1874921 - 2⁶ = 1874857 is a prime.

Together with 1874923, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (1874923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 937460 + 937461.

It is an arithmetic number, because the mean of its divisors is an integer number (937461).

2^1874921 is an apocalyptic number.

It is an amenable number.

1874921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1874921 is an equidigital number, since it uses as much as digits as its factorization.

1874921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 1874921 is about 1369.2775467377. The cubic root of 1874921 is about 123.3088718633.

The spelling of 1874921 in words is "one million, eight hundred seventy-four thousand, nine hundred twenty-one".