1916988 has 24 divisors (see below), whose sum is σ = 4736592. Its totient is φ = 601344.

The previous prime is 1916977. The next prime is 1917001. The reversal of 1916988 is 8896191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4495 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (197358).

2^1916988 is an apocalyptic number.

It is an amenable number.

1916988 is an abundant number, since it is smaller than the sum of its proper divisors (2819604).

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

1916988 is a wasteful number, since it uses less digits than its factorization.

1916988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9421 (or 9419 counting only the distinct ones).

The product of its digits is 31104, while the sum is 42.

The square root of 1916988 is about 1384.5533575850. The cubic root of 1916988 is about 124.2242732760.

The spelling of 1916988 in words is "one million, nine hundred sixteen thousand, nine hundred eighty-eight".