1619968 has 48 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 688128.

The previous prime is 1619957. The next prime is 1619983. The reversal of 1619968 is 8699161.

It is a self number, because there is not a number n which added to its sum of digits gives 1619968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14280 + ... + 14392.

It is an arithmetic number, because the mean of its divisors is an integer number (77805).

2^1619968 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 1619968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867320).

1619968 is an abundant number, since it is smaller than the sum of its proper divisors (2114672).

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

1619968 is an equidigital number, since it uses as much as digits as its factorization.

1619968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 122 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 1619968 is about 1272.7796352865. The cubic root of 1619968 is about 117.4452559228.

The spelling of 1619968 in words is "one million, six hundred nineteen thousand, nine hundred sixty-eight".