1969864 has 48 divisors (see below), whose sum is σ = 4216320. Its totient is φ = 861120.

The previous prime is 1969831. The next prime is 1969889. The reversal of 1969864 is 4689691.

It is a self number, because there is not a number n which added to its sum of digits gives 1969864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41889 + ... + 41935.

It is an arithmetic number, because the mean of its divisors is an integer number (87840).

2^1969864 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 1969864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2108160).

1969864 is an abundant number, since it is smaller than the sum of its proper divisors (2246456).

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

1969864 is a wasteful number, since it uses less digits than its factorization.

1969864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 93 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 1969864 is about 1403.5184359316. The cubic root of 1969864 is about 125.3560833407.

The spelling of 1969864 in words is "one million, nine hundred sixty-nine thousand, eight hundred sixty-four".