1890369 has 24 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 1144800.

The previous prime is 1890337. The next prime is 1890373. The reversal of 1890369 is 9630981.

It is not a de Polignac number, because 1890369 - 2⁵ = 1890337 is a prime.

It is a super-2 number, since 2×1890369² = 7146989912322, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1890319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12444 + ... + 12594.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

2^1890369 is an apocalyptic number.

It is an amenable number.

1890369 is a deficient number, since it is larger than the sum of its proper divisors (1097343).

1890369 is a wasteful number, since it uses less digits than its factorization.

1890369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1890369 is about 1374.9069059395. The cubic root of 1890369 is about 123.6466047896.

The spelling of 1890369 in words is "one million, eight hundred ninety thousand, three hundred sixty-nine".