1840994 has 4 divisors (see below), whose sum is σ = 2761494. Its totient is φ = 920496.

The previous prime is 1840973. The next prime is 1841003. The reversal of 1840994 is 4990481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4990481 = 389 ⋅12829.

It can be written as a sum of positive squares in only one way, i.e., 1075369 + 765625 = 1037^2 + 875^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460247 + ... + 460250.

2^1840994 is an apocalyptic number.

1840994 is a deficient number, since it is larger than the sum of its proper divisors (920500).

1840994 is an equidigital number, since it uses as much as digits as its factorization.

1840994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920499.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1840994 is about 1356.8323404165. The cubic root of 1840994 is about 122.5605753443.

The spelling of 1840994 in words is "one million, eight hundred forty thousand, nine hundred ninety-four".