1994649 has 16 divisors (see below), whose sum is σ = 2790720. Its totient is φ = 1265600.

The previous prime is 1994647. The next prime is 1994651. The reversal of 1994649 is 9464991.

It is an interprime number because it is at equal distance from previous prime (1994647) and next prime (1994651).

It is a cyclic number.

It is not a de Polignac number, because 1994649 - 2¹ = 1994647 is a prime.

1994649 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1994649.

It is not an unprimeable number, because it can be changed into a prime (1994647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8674 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (174420).

2^1994649 is an apocalyptic number.

It is an amenable number.

1994649 is a deficient number, since it is larger than the sum of its proper divisors (796071).

1994649 is a wasteful number, since it uses less digits than its factorization.

1994649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its digits is 69984, while the sum is 42.

The square root of 1994649 is about 1412.3204310637. The cubic root of 1994649 is about 125.8796406714.

The spelling of 1994649 in words is "one million, nine hundred ninety-four thousand, six hundred forty-nine".