1890379 has 2 divisors, whose sum is σ = 1890380. Its totient is φ = 1890378.

The previous prime is 1890373. The next prime is 1890389. The reversal of 1890379 is 9730981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1890379 - 2¹¹ = 1888331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1890373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945189 + 945190.

It is an arithmetic number, because the mean of its divisors is an integer number (945190).

2^1890379 is an apocalyptic number.

1890379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890379 is an equidigital number, since it uses as much as digits as its factorization.

1890379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1890379 is about 1374.9105425445. The cubic root of 1890379 is about 123.6468228182.

The spelling of 1890379 in words is "one million, eight hundred ninety thousand, three hundred seventy-nine".