1988411 has 2 divisors, whose sum is σ = 1988412. Its totient is φ = 1988410.

The previous prime is 1988353. The next prime is 1988423. The reversal of 1988411 is 1148891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1988411 - 2⁶ = 1988347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1988471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994205 + 994206.

It is an arithmetic number, because the mean of its divisors is an integer number (994206).

2^1988411 is an apocalyptic number.

1988411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988411 is an equidigital number, since it uses as much as digits as its factorization.

1988411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 32.

The square root of 1988411 is about 1410.1102793753. The cubic root of 1988411 is about 125.7482796819.

The spelling of 1988411 in words is "one million, nine hundred eighty-eight thousand, four hundred eleven".