1949808 has 60 divisors (see below), whose sum is σ = 5866440. Its totient is φ = 556416.

The previous prime is 1949791. The next prime is 1949809. The reversal of 1949808 is 8089491.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1938 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (97774).

2^1949808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2933220).

1949808 is an abundant number, since it is smaller than the sum of its proper divisors (3916632).

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

1949808 is a wasteful number, since it uses less digits than its factorization.

1949808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1949808 is about 1396.3552556567. The cubic root of 1949808 is about 124.9291972367.

The spelling of 1949808 in words is "one million, nine hundred forty-nine thousand, eight hundred eight".