1988807 has 2 divisors, whose sum is σ = 1988808. Its totient is φ = 1988806.

The previous prime is 1988801. The next prime is 1988837. The reversal of 1988807 is 7088891.

It is a weak prime.

It is an emirp because it is prime and its reverse (7088891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1988807 - 2⁸ = 1988551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994403 + 994404.

It is an arithmetic number, because the mean of its divisors is an integer number (994404).

2^1988807 is an apocalyptic number.

1988807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988807 is an equidigital number, since it uses as much as digits as its factorization.

1988807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1988807 is about 1410.2506869348. The cubic root of 1988807 is about 125.7566268854.

The spelling of 1988807 in words is "one million, nine hundred eighty-eight thousand, eight hundred seven".