1988023 has 2 divisors, whose sum is σ = 1988024. Its totient is φ = 1988022.

The previous prime is 1988011. The next prime is 1988033. The reversal of 1988023 is 3208891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1988023 - 2⁵ = 1987991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994011 + 994012.

It is an arithmetic number, because the mean of its divisors is an integer number (994012).

2^1988023 is an apocalyptic number.

1988023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988023 is an equidigital number, since it uses as much as digits as its factorization.

1988023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1988023 is about 1409.9726947711. The cubic root of 1988023 is about 125.7401000339.

The spelling of 1988023 in words is "one million, nine hundred eighty-eight thousand, twenty-three".