1968549 has 32 divisors (see below), whose sum is σ = 3162240. Its totient is φ = 1084160.

The previous prime is 1968541. The next prime is 1968563. The reversal of 1968549 is 9458691.

It is not a de Polignac number, because 1968549 - 2³ = 1968541 is a prime.

Its product of digits (77760) is a multiple of the sum of its prime divisors (60).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1968549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67867 + ... + 67895.

It is an arithmetic number, because the mean of its divisors is an integer number (98820).

2^1968549 is an apocalyptic number.

It is an amenable number.

1968549 is a deficient number, since it is larger than the sum of its proper divisors (1193691).

1968549 is a wasteful number, since it uses less digits than its factorization.

1968549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 60 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 1968549 is about 1403.0498921991. The cubic root of 1968549 is about 125.3281829469.

The spelling of 1968549 in words is "one million, nine hundred sixty-eight thousand, five hundred forty-nine".