1864994 has 4 divisors (see below), whose sum is σ = 2797494. Its totient is φ = 932496.

The previous prime is 1864987. The next prime is 1865011. The reversal of 1864994 is 4994681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4994681 = 227 ⋅22003.

It can be written as a sum of positive squares in only one way, i.e., 1857769 + 7225 = 1363^2 + 85^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 466247 + ... + 466250.

2^1864994 is an apocalyptic number.

1864994 is a deficient number, since it is larger than the sum of its proper divisors (932500).

1864994 is an equidigital number, since it uses as much as digits as its factorization.

1864994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932499.

The product of its digits is 62208, while the sum is 41.

The square root of 1864994 is about 1365.6478316169. The cubic root of 1864994 is about 123.0908619830.

The spelling of 1864994 in words is "one million, eight hundred sixty-four thousand, nine hundred ninety-four".