1649916 has 24 divisors (see below), whose sum is σ = 4277840. Its totient is φ = 549936.

The previous prime is 1649887. The next prime is 1649917. The reversal of 1649916 is 6199461.

1649916 is a `hidden beast` number, since 1 + 649 + 9 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7531 + ... + 7746.

2^1649916 is an apocalyptic number.

It is an amenable number.

1649916 is an abundant number, since it is smaller than the sum of its proper divisors (2627924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649916 is a wasteful number, since it uses less digits than its factorization.

1649916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15290 (or 15282 counting only the distinct ones).

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

The square root of 1649916 is about 1284.4905604947. The cubic root of 1649916 is about 118.1645697618.

The spelling of 1649916 in words is "one million, six hundred forty-nine thousand, nine hundred sixteen".